28667245944 has 16 divisors (see below), whose sum is σ = 71668114920. Its totient is φ = 9555748640.

The previous prime is 28667245913. The next prime is 28667245951. The reversal of 28667245944 is 44954276682.

It is a super-2 number, since 2×28667245944² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597234267 + ... + 597234314.

Almost surely, 2^28667245944 is an apocalyptic number.

28667245944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28667245944 is an abundant number, since it is smaller than the sum of its proper divisors (43000868976).

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

28667245944 is a wasteful number, since it uses less digits than its factorization.

28667245944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194468590 (or 1194468586 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 57.

The spelling of 28667245944 in words is "twenty-eight billion, six hundred sixty-seven million, two hundred forty-five thousand, nine hundred forty-four".