28456195038 has 16 divisors (see below), whose sum is σ = 57114928656. Its totient is φ = 9451641920.

The previous prime is 28456195037. The next prime is 28456195051. The reversal of 28456195038 is 83059165482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28456195037) 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, 8437281 + ... + 8440652.

It is an arithmetic number, because the mean of its divisors is an integer number (3569683041).

Almost surely, 2^28456195038 is an apocalyptic number.

28456195038 is an abundant number, since it is smaller than the sum of its proper divisors (28658733618).

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

28456195038 is a wasteful number, since it uses less digits than its factorization.

28456195038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16878219.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 28456195038 in words is "twenty-eight billion, four hundred fifty-six million, one hundred ninety-five thousand, thirty-eight".