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2010012500 = 22554012
BaseRepresentation
bin111011111001110…
…0101101101010100
312012002012012210102
41313303211231110
513104030400000
6531241313232
7100544552516
oct16763455524
95162165712
102010012500
11941666161
12481195818
13260571812
14150d43bb6
15bb6de3d5
hex77ce5b54

2010012500 has 54 divisors (see below), whose sum is σ = 4407612426. Its totient is φ = 802000000.

The previous prime is 2010012469. The next prime is 2010012509. The reversal of 2010012500 is 52100102.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 9 ways, for example, as 1129228816 + 880783684 = 33604^2 + 29678^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010012509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5012300 + ... + 5012700.

Almost surely, 22010012500 is an apocalyptic number.

2010012500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2010012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203806213).

2010012500 is an abundant number, since it is smaller than the sum of its proper divisors (2397599926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2010012500 is an frugal number, since it uses more digits than its factorization.

2010012500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 2010012500 is about 44833.1629488708. The cubic root of 2010012500 is about 1262.0200443369.

Multiplying 2010012500 by its product of nonzero digits (20), we get a square (40200250000 = 2005002).

2010012500 divided by its product of nonzero digits (20) gives a square (100500625 = 100252).

Adding to 2010012500 its reverse (52100102), we get a palindrome (2062112602).

The spelling of 2010012500 in words is "two billion, ten million, twelve thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 401 500 625 802 1250 1604 2005 2500 3125 4010 6250 8020 10025 12500 20050 40100 50125 100250 160801 200500 250625 321602 501250 643204 804005 1002500 1253125 1608010 2506250 3216020 4020025 5012500 8040050 16080100 20100125 40200250 80400500 100500625 201001250 402002500 502503125 1005006250 2010012500