28290916 has 12 divisors (see below), whose sum is σ = 49624960. Its totient is φ = 14112360.

The previous prime is 28290893. The next prime is 28290917. The reversal of 28290916 is 61909282.

It is not an unprimeable number, because it can be changed into a prime (28290917) 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, 6300 + ... + 9811.

Almost surely, 2^28290916 is an apocalyptic number.

It is an amenable number.

28290916 is a deficient number, since it is larger than the sum of its proper divisors (21334044).

28290916 is a wasteful number, since it uses less digits than its factorization.

28290916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16554 (or 16552 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 28290916 is about 5318.9205671828. The cubic root of 28290916 is about 304.7069333965.

The spelling of 28290916 in words is "twenty-eight million, two hundred ninety thousand, nine hundred sixteen".