28937116 has 12 divisors (see below), whose sum is σ = 54535432. Its totient is φ = 13355568.

The previous prime is 28937113. The next prime is 28937123. The reversal of 28937116 is 61173982.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28937113) 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, 278190 + ... + 278293.

Almost surely, 2^28937116 is an apocalyptic number.

28937116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28937116 is a deficient number, since it is larger than the sum of its proper divisors (25598316).

28937116 is a wasteful number, since it uses less digits than its factorization.

28937116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556500 (or 556498 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 28937116 is about 5379.3230057322. The cubic root of 28937116 is about 307.0094533901.

The spelling of 28937116 in words is "twenty-eight million, nine hundred thirty-seven thousand, one hundred sixteen".