28503404764 has 24 divisors (see below), whose sum is σ = 52062675840. Its totient is φ = 13628663664.

The previous prime is 28503404759. The next prime is 28503404771. The reversal of 28503404764 is 46740430582.

It is a self number, because there is not a number n which added to its sum of digits gives 28503404764.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353847 + ... + 426865.

It is an arithmetic number, because the mean of its divisors is an integer number (2169278160).

Almost surely, 2^28503404764 is an apocalyptic number.

It is an amenable number.

28503404764 is a deficient number, since it is larger than the sum of its proper divisors (23559271076).

28503404764 is a wasteful number, since it uses less digits than its factorization.

28503404764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77289 (or 77287 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 28503404764 in words is "twenty-eight billion, five hundred three million, four hundred four thousand, seven hundred sixty-four".