28325214864 has 80 divisors (see below), whose sum is σ = 81430323840. Its totient is φ = 9427052160.

The previous prime is 28325214851. The next prime is 28325214881. The reversal of 28325214864 is 46841252382.

28325214864 is a `hidden beast` number, since 2 + 83 + 2 + 521 + 48 + 6 + 4 = 666.

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, 228834 + ... + 330174.

It is an arithmetic number, because the mean of its divisors is an integer number (1017879048).

Almost surely, 2^28325214864 is an apocalyptic number.

28325214864 is a gapful number since it is divisible by the number (24) 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 28325214864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40715161920).

28325214864 is an abundant number, since it is smaller than the sum of its proper divisors (53105108976).

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

28325214864 is a wasteful number, since it uses less digits than its factorization.

28325214864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102005 (or 101993 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

It can be divided in two parts, 283252 and 14864, that added together give a square (298116 = 546²).

The spelling of 28325214864 in words is "twenty-eight billion, three hundred twenty-five million, two hundred fourteen thousand, eight hundred sixty-four".