28918256752 has 80 divisors (see below), whose sum is σ = 72107956224. Its totient is φ = 10903392000.

The previous prime is 28918256723. The next prime is 28918256779. The reversal of 28918256752 is 25765281982.

It is a junction number, because it is equal to n+sod(n) for n = 28918256693 and 28918256702.

It is a congruent number.

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, 340399 + ... + 416782.

Almost surely, 2^28918256752 is an apocalyptic number.

28918256752 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28918256752 is an abundant number, since it is smaller than the sum of its proper divisors (43189699472).

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

28918256752 is a wasteful number, since it uses less digits than its factorization.

28918256752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757238 (or 757232 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 55.

The spelling of 28918256752 in words is "twenty-eight billion, nine hundred eighteen million, two hundred fifty-six thousand, seven hundred fifty-two".