28920576 has 36 divisors (see below), whose sum is σ = 76972952. Its totient is φ = 9639936.

The previous prime is 28920571. The next prime is 28920589. The reversal of 28920576 is 67502982.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28920571) 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, 18061 + ... + 19596.

Almost surely, 2^28920576 is an apocalyptic number.

It is an amenable number.

28920576 is an abundant number, since it is smaller than the sum of its proper divisors (48052376).

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

28920576 is an equidigital number, since it uses as much as digits as its factorization.

28920576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37676 (or 37662 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 28920576 is about 5377.7854178091. The cubic root of 28920576 is about 306.9509483182.

The spelling of 28920576 in words is "twenty-eight million, nine hundred twenty thousand, five hundred seventy-six".