28264330 has 16 divisors (see below), whose sum is σ = 52059744. Its totient is φ = 11042640.

The previous prime is 28264307. The next prime is 28264349. The reversal of 28264330 is 3346282.

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, 32436 + ... + 33295.

It is an arithmetic number, because the mean of its divisors is an integer number (3253734).

Almost surely, 2^28264330 is an apocalyptic number.

28264330 is a deficient number, since it is larger than the sum of its proper divisors (23795414).

28264330 is a wasteful number, since it uses less digits than its factorization.

28264330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65781.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 28264330 is about 5316.4207884629. The cubic root of 28264330 is about 304.6114554294.

The spelling of 28264330 in words is "twenty-eight million, two hundred sixty-four thousand, three hundred thirty".