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2012020 = 225293469
BaseRepresentation
bin111101011001101110100
310210012222021
413223031310
51003341040
6111042524
723046643
oct7531564
93705867
102012020
11115472a
12810444
13555a5a
143a535a
1529b24a
hex1eb374

2012020 has 24 divisors (see below), whose sum is σ = 4372200. Its totient is φ = 776832.

The previous prime is 2012011. The next prime is 2012027. The reversal of 2012020 is 202102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1296 + 2010724 = 36^2 + 1418^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2011994 and 2012012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155 + ... + 2314.

It is an arithmetic number, because the mean of its divisors is an integer number (182175).

22012020 is an apocalyptic number.

2012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012020 is an abundant number, since it is smaller than the sum of its proper divisors (2360180).

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

2012020 is a wasteful number, since it uses less digits than its factorization.

2012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507 (or 3505 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 2012020 is about 1418.4569080518. The cubic root of 2012020 is about 126.2440052050.

Adding to 2012020 its reverse (202102), we get a palindrome (2214122).

The spelling of 2012020 in words is "two million, twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 3469 6938 13876 17345 34690 69380 100601 201202 402404 503005 1006010 2012020