28904682 has 16 divisors (see below), whose sum is σ = 57863232. Its totient is φ = 9625920.

The previous prime is 28904647. The next prime is 28904717. The reversal of 28904682 is 28640982.

It is an interprime number because it is at equal distance from previous prime (28904647) and next prime (28904717).

It is a super-2 number, since 2×28904682² = 1670961283042248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28904682.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9307 + ... + 12017.

It is an arithmetic number, because the mean of its divisors is an integer number (3616452).

Almost surely, 2^28904682 is an apocalyptic number.

28904682 is an abundant number, since it is smaller than the sum of its proper divisors (28958550).

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

28904682 is a wasteful number, since it uses less digits than its factorization.

28904682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 28904682 is about 5376.3074688861. The cubic root of 28904682 is about 306.8947072487.

The spelling of 28904682 in words is "twenty-eight million, nine hundred four thousand, six hundred eighty-two".