28057762252 has 12 divisors (see below), whose sum is σ = 52878090496. Its totient is φ = 12949736400.

The previous prime is 28057762231. The next prime is 28057762259. The reversal of 28057762252 is 25226775082.

It is a super-2 number, since 2×28057762252² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28057762259) 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 3 ways as a sum of consecutive naturals, for example, 269786124 + ... + 269786227.

Almost surely, 2^28057762252 is an apocalyptic number.

It is an amenable number.

28057762252 is a deficient number, since it is larger than the sum of its proper divisors (24820328244).

28057762252 is a wasteful number, since it uses less digits than its factorization.

28057762252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539572368 (or 539572366 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 46.

The spelling of 28057762252 in words is "twenty-eight billion, fifty-seven million, seven hundred sixty-two thousand, two hundred fifty-two".