28901516 has 24 divisors (see below), whose sum is σ = 59797920. Its totient is φ = 11958912.

The previous prime is 28901507. The next prime is 28901531. The reversal of 28901516 is 61510982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16985 + ... + 18608.

It is an arithmetic number, because the mean of its divisors is an integer number (2491580).

Almost surely, 2^28901516 is an apocalyptic number.

It is an amenable number.

28901516 is an abundant number, since it is smaller than the sum of its proper divisors (30896404).

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

28901516 is a wasteful number, since it uses less digits than its factorization.

28901516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35633 (or 35631 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 28901516 is about 5376.0130208176. The cubic root of 28901516 is about 306.8835018654.

The spelling of 28901516 in words is "twenty-eight million, nine hundred one thousand, five hundred sixteen".