28980765224 has 8 divisors (see below), whose sum is σ = 54338934810. Its totient is φ = 14490382608.

The previous prime is 28980765217. The next prime is 28980765239. The reversal of 28980765224 is 42256708982.

It can be written as a sum of positive squares in only one way, i.e., 20932881124 + 8047884100 = 144682^2 + 89710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1811297819 + ... + 1811297834.

Almost surely, 2^28980765224 is an apocalyptic number.

It is an amenable number.

28980765224 is a deficient number, since it is larger than the sum of its proper divisors (25358169586).

28980765224 is a wasteful number, since it uses less digits than its factorization.

28980765224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622595659 (or 3622595655 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 28980765224 in words is "twenty-eight billion, nine hundred eighty million, seven hundred sixty-five thousand, two hundred twenty-four".