28358916 has 24 divisors (see below), whose sum is σ = 66522624. Its totient is φ = 9402720.

The previous prime is 28358879. The next prime is 28358923. The reversal of 28358916 is 61985382.

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, 3895 + ... + 8478.

It is an arithmetic number, because the mean of its divisors is an integer number (2771776).

Almost surely, 2^28358916 is an apocalyptic number.

It is an amenable number.

28358916 is an abundant number, since it is smaller than the sum of its proper divisors (38163708).

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

28358916 is a wasteful number, since it uses less digits than its factorization.

28358916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12571 (or 12569 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 28358916 is about 5325.3090051189. The cubic root of 28358916 is about 304.9508690906.

The spelling of 28358916 in words is "twenty-eight million, three hundred fifty-eight thousand, nine hundred sixteen".