28802478 has 16 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 9592056.

The previous prime is 28802467. The next prime is 28802483. The reversal of 28802478 is 87420882.

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, 11451 + ... + 13737.

It is an arithmetic number, because the mean of its divisors is an integer number (3603600).

Almost surely, 2^28802478 is an apocalyptic number.

28802478 is an abundant number, since it is smaller than the sum of its proper divisors (28855122).

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

28802478 is a wasteful number, since it uses less digits than its factorization.

28802478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391.

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 28802478 is about 5366.7940150522. The cubic root of 28802478 is about 306.5325639774.

The spelling of 28802478 in words is "twenty-eight million, eight hundred two thousand, four hundred seventy-eight".