28637614320 has 160 divisors (see below), whose sum is σ = 101508169728. Its totient is φ = 6542567424.

The previous prime is 28637614319. The next prime is 28637614409. The reversal of 28637614320 is 2341673682.

It is a super-2 number, since 2×28637614320² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6662412 + ... + 6666708.

Almost surely, 2^28637614320 is an apocalyptic number.

28637614320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28637614320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50754084864).

28637614320 is an abundant number, since it is smaller than the sum of its proper divisors (72870555408).

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

28637614320 is a wasteful number, since it uses less digits than its factorization.

28637614320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8287 (or 8281 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 28637614320 in words is "twenty-eight billion, six hundred thirty-seven million, six hundred fourteen thousand, three hundred twenty".