28918604403304 has 128 divisors (see below), whose sum is σ = 70077886801920. Its totient is φ = 10860021561600.

The previous prime is 28918604403263. The next prime is 28918604403317. The reversal of 28918604403304 is 40330440681982.

It is a super-2 number, since 2×28918604403304² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3490252 + ... + 8367739.

It is an arithmetic number, because the mean of its divisors is an integer number (547483490640).

Almost surely, 2^{28918604403304} is an apocalyptic number.

It is an amenable number.

28918604403304 is an abundant number, since it is smaller than the sum of its proper divisors (41159282398616).

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

28918604403304 is a wasteful number, since it uses less digits than its factorization.

28918604403304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11858159 (or 11858155 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 28918604403304 in words is "twenty-eight trillion, nine hundred eighteen billion, six hundred four million, four hundred three thousand, three hundred four".