28707253156 has 12 divisors (see below), whose sum is σ = 50249485440. Its totient is φ = 14350257320.

The previous prime is 28707253151. The next prime is 28707253199. The reversal of 28707253156 is 65135270782.

It is not an unprimeable number, because it can be changed into a prime (28707253151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823096 + ... + 857263.

It is an arithmetic number, because the mean of its divisors is an integer number (4187457120).

Almost surely, 2^28707253156 is an apocalyptic number.

It is an amenable number.

28707253156 is a deficient number, since it is larger than the sum of its proper divisors (21542232284).

28707253156 is a wasteful number, since it uses less digits than its factorization.

28707253156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684634 (or 1684632 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 28707253156 in words is "twenty-eight billion, seven hundred seven million, two hundred fifty-three thousand, one hundred fifty-six".