28780843224 has 64 divisors (see below), whose sum is σ = 82266163200. Its totient is φ = 8219579904.

The previous prime is 28780843193. The next prime is 28780843297. The reversal of 28780843224 is 42234808782.

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, 370617 + ... + 441495.

It is an arithmetic number, because the mean of its divisors is an integer number (1285408800).

Almost surely, 2^28780843224 is an apocalyptic number.

28780843224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28780843224 is an abundant number, since it is smaller than the sum of its proper divisors (53485319976).

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

28780843224 is a wasteful number, since it uses less digits than its factorization.

28780843224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73312 (or 73308 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 48.

The spelling of 28780843224 in words is "twenty-eight billion, seven hundred eighty million, eight hundred forty-three thousand, two hundred twenty-four".