28750356 has 48 divisors (see below), whose sum is σ = 74827200. Its totient is φ = 9546336.

The previous prime is 28750321. The next prime is 28750411. The reversal of 28750356 is 65305782.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28750356.

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, 54711 + ... + 55233.

It is an arithmetic number, because the mean of its divisors is an integer number (1558900).

Almost surely, 2^28750356 is an apocalyptic number.

It is an amenable number.

28750356 is an abundant number, since it is smaller than the sum of its proper divisors (46076844).

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

28750356 is a wasteful number, since it uses less digits than its factorization.

28750356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 28750356 is about 5361.9358444502. The cubic root of 28750356 is about 306.3475482116.

The spelling of 28750356 in words is "twenty-eight million, seven hundred fifty thousand, three hundred fifty-six".