28591332744 has 64 divisors (see below), whose sum is σ = 77030231040. Its totient is φ = 8791211520.

The previous prime is 28591332727. The next prime is 28591332773. The reversal of 28591332744 is 44723319582.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28591332693 and 28591332702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427804 + ... + 490100.

It is an arithmetic number, because the mean of its divisors is an integer number (1203597360).

Almost surely, 2^28591332744 is an apocalyptic number.

28591332744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28591332744 is an abundant number, since it is smaller than the sum of its proper divisors (48438898296).

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

28591332744 is a wasteful number, since it uses less digits than its factorization.

28591332744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63790 (or 63786 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The spelling of 28591332744 in words is "twenty-eight billion, five hundred ninety-one million, three hundred thirty-two thousand, seven hundred forty-four".