28669902 has 16 divisors (see below), whose sum is σ = 57932112. Its totient is φ = 9457920.

The previous prime is 28669897. The next prime is 28669919. The reversal of 28669902 is 20996682.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24049 + ... + 25212.

It is an arithmetic number, because the mean of its divisors is an integer number (3620757).

Almost surely, 2^28669902 is an apocalyptic number.

28669902 is an abundant number, since it is smaller than the sum of its proper divisors (29262210).

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

28669902 is a wasteful number, since it uses less digits than its factorization.

28669902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49363.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 28669902 is about 5354.4282607950. The cubic root of 28669902 is about 306.0615237906.

The spelling of 28669902 in words is "twenty-eight million, six hundred sixty-nine thousand, nine hundred two".