28931254996 has 24 divisors (see below), whose sum is σ = 60378272640. Its totient is φ = 11860017312.

The previous prime is 28931254981. The next prime is 28931254997. The reversal of 28931254996 is 69945213982.

It is a self number, because there is not a number n which added to its sum of digits gives 28931254996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28931254997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22461511 + ... + 22462798.

It is an arithmetic number, because the mean of its divisors is an integer number (2515761360).

Almost surely, 2^28931254996 is an apocalyptic number.

It is an amenable number.

28931254996 is an abundant number, since it is smaller than the sum of its proper divisors (31447017644).

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

28931254996 is a wasteful number, since it uses less digits than its factorization.

28931254996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44924343 (or 44924341 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 58.

The spelling of 28931254996 in words is "twenty-eight billion, nine hundred thirty-one million, two hundred fifty-four thousand, nine hundred ninety-six".