3129645252 has 24 divisors (see below), whose sum is σ = 7360009216. Its totient is φ = 1035000288.

The previous prime is 3129645203. The next prime is 3129645263. The reversal of 3129645252 is 2525469213.

It is a super-2 number, since 2×3129645252² = 19589358806732287008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3129645252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025263 + ... + 1028310.

Almost surely, 2^3129645252 is an apocalyptic number.

It is an amenable number.

3129645252 is an abundant number, since it is smaller than the sum of its proper divisors (4230363964).

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

3129645252 is a wasteful number, since it uses less digits than its factorization.

3129645252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053707 (or 2053705 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 3129645252 is about 55943.2324057164. The cubic root of 3129645252 is about 1462.7329264189.

The spelling of 3129645252 in words is "three billion, one hundred twenty-nine million, six hundred forty-five thousand, two hundred fifty-two".