28670916 has 12 divisors (see below), whose sum is σ = 66898832. Its totient is φ = 9556968.

The previous prime is 28670911. The next prime is 28670921. The reversal of 28670916 is 61907682.

It is an interprime number because it is at equal distance from previous prime (28670911) and next prime (28670921).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (28670911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194610 + ... + 1194633.

Almost surely, 2^28670916 is an apocalyptic number.

It is an amenable number.

28670916 is an abundant number, since it is smaller than the sum of its proper divisors (38227916).

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

28670916 is a wasteful number, since it uses less digits than its factorization.

28670916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389250 (or 2389248 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 28670916 is about 5354.5229479385. The cubic root of 28670916 is about 306.0651320197.

The spelling of 28670916 in words is "twenty-eight million, six hundred seventy thousand, nine hundred sixteen".