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2200311220 = 225110015561
BaseRepresentation
bin1000001100100110…
…0001010110110100
312200100021101120011
42003021201112310
514001234424340
61002200150004
7105345223342
oct20311412664
95610241504
102200311220
11a2a022428
12514a68304
13290b10203
1416c31c992
15cd27e0ea
hex832615b4

2200311220 has 12 divisors (see below), whose sum is σ = 4620653604. Its totient is φ = 880124480.

The previous prime is 2200311199. The next prime is 2200311221. The reversal of 2200311220 is 221130022.

It can be written as a sum of positive squares in 2 ways, for example, as 775399716 + 1424911504 = 27846^2 + 37748^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2200311220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200311221) 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 3 ways as a sum of consecutive naturals, for example, 55007761 + ... + 55007800.

It is an arithmetic number, because the mean of its divisors is an integer number (385054467).

Almost surely, 22200311220 is an apocalyptic number.

2200311220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2200311220 is an abundant number, since it is smaller than the sum of its proper divisors (2420342384).

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

2200311220 is a wasteful number, since it uses less digits than its factorization.

2200311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110015570 (or 110015568 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2200311220 is about 46907.4750972593. The cubic root of 2200311220 is about 1300.6527727582.

Adding to 2200311220 its reverse (221130022), we get a palindrome (2421441242).

The spelling of 2200311220 in words is "two billion, two hundred million, three hundred eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 110015561 220031122 440062244 550077805 1100155610 2200311220