2156204624 has 30 divisors (see below), whose sum is σ = 4859712954. Its totient is φ = 924087360.

The previous prime is 2156204623. The next prime is 2156204629. The reversal of 2156204624 is 4264026512.

It can be written as a sum of positive squares in only one way, i.e., 2147395600 + 8809024 = 46340^2 + 2968^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156204623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1374347 + ... + 1375914.

Almost surely, 2^2156204624 is an apocalyptic number.

It is an amenable number.

2156204624 is an abundant number, since it is smaller than the sum of its proper divisors (2703508330).

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

2156204624 is a wasteful number, since it uses less digits than its factorization.

2156204624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750283 (or 2750270 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2156204624 is about 46434.9504576025. The cubic root of 2156204624 is about 1291.9032507181.

The spelling of 2156204624 in words is "two billion, one hundred fifty-six million, two hundred four thousand, six hundred twenty-four".