15280028780 has 12 divisors (see below), whose sum is σ = 32088060480. Its totient is φ = 6112011504.

The previous prime is 15280028773. The next prime is 15280028807. The reversal of 15280028780 is 8782008251.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382000700 + ... + 382000739.

It is an arithmetic number, because the mean of its divisors is an integer number (2674005040).

Almost surely, 2^15280028780 is an apocalyptic number.

15280028780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15280028780 is an abundant number, since it is smaller than the sum of its proper divisors (16808031700).

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

15280028780 is a wasteful number, since it uses less digits than its factorization.

15280028780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764001448 (or 764001446 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The spelling of 15280028780 in words is "fifteen billion, two hundred eighty million, twenty-eight thousand, seven hundred eighty".