28725160 has 32 divisors (see below), whose sum is σ = 67443840. Its totient is φ = 10990144.

The previous prime is 28725149. The next prime is 28725181. The reversal of 28725160 is 6152782.

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, 14692 + ... + 16531.

It is an arithmetic number, because the mean of its divisors is an integer number (2107620).

Almost surely, 2^28725160 is an apocalyptic number.

28725160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28725160 is an abundant number, since it is smaller than the sum of its proper divisors (38718680).

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

28725160 is a wasteful number, since it uses less digits than its factorization.

28725160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31257 (or 31253 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 28725160 is about 5359.5858048920. The cubic root of 28725160 is about 306.2580306099.

The spelling of 28725160 in words is "twenty-eight million, seven hundred twenty-five thousand, one hundred sixty".