28864902 has 32 divisors (see below), whose sum is σ = 64520064. Its totient is φ = 8532800.

The previous prime is 28864867. The next prime is 28864903. The reversal of 28864902 is 20946882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28864903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2628 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (2016252).

Almost surely, 2^28864902 is an apocalyptic number.

28864902 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28864902 is an abundant number, since it is smaller than the sum of its proper divisors (35655162).

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

28864902 is a wasteful number, since it uses less digits than its factorization.

28864902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10724.

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

The square root of 28864902 is about 5372.6066299330. The cubic root of 28864902 is about 306.7538549088.

The spelling of 28864902 in words is "twenty-eight million, eight hundred sixty-four thousand, nine hundred two".