28934581464 has 48 divisors (see below), whose sum is σ = 78689702520. Its totient is φ = 9604834560.

The previous prime is 28934581427. The next prime is 28934581477. The reversal of 28934581464 is 46418543982.

28934581464 is a `hidden beast` number, since 28 + 9 + 34 + 581 + 4 + 6 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28934581464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 816402 + ... + 851105.

Almost surely, 2^28934581464 is an apocalyptic number.

28934581464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28934581464 is an abundant number, since it is smaller than the sum of its proper divisors (49755121056).

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

28934581464 is a wasteful number, since it uses less digits than its factorization.

28934581464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667760 (or 1667753 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 28934581464 in words is "twenty-eight billion, nine hundred thirty-four million, five hundred eighty-one thousand, four hundred sixty-four".