28968906 has 16 divisors (see below), whose sum is σ = 58451904. Its totient is φ = 9570624.

The previous prime is 28968887. The next prime is 28968913. The reversal of 28968906 is 60986982.

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, 20686 + ... + 22041.

It is an arithmetic number, because the mean of its divisors is an integer number (3653244).

Almost surely, 2^28968906 is an apocalyptic number.

28968906 is an abundant number, since it is smaller than the sum of its proper divisors (29482998).

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

28968906 is a wasteful number, since it uses less digits than its factorization.

28968906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42845.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 28968906 is about 5382.2770274299. The cubic root of 28968906 is about 307.1218379909.

The spelling of 28968906 in words is "twenty-eight million, nine hundred sixty-eight thousand, nine hundred six".