28700916 has 24 divisors (see below), whose sum is σ = 69129984. Its totient is φ = 9258240.

The previous prime is 28700911. The next prime is 28700933. The reversal of 28700916 is 61900782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28700911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38205 + ... + 38948.

It is an arithmetic number, because the mean of its divisors is an integer number (2880416).

Almost surely, 2^28700916 is an apocalyptic number.

It is an amenable number.

28700916 is an abundant number, since it is smaller than the sum of its proper divisors (40429068).

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

28700916 is a wasteful number, since it uses less digits than its factorization.

28700916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77191 (or 77189 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 28700916 is about 5357.3235855229. The cubic root of 28700916 is about 306.1718458907.

The spelling of 28700916 in words is "twenty-eight million, seven hundred thousand, nine hundred sixteen".