28725310 has 8 divisors (see below), whose sum is σ = 51705576. Its totient is φ = 11490120.

The previous prime is 28725293. The next prime is 28725331. The reversal of 28725310 is 1352782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28725310² = 1650286869192200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436256 + ... + 1436275.

It is an arithmetic number, because the mean of its divisors is an integer number (6463197).

Almost surely, 2^28725310 is an apocalyptic number.

28725310 is a deficient number, since it is larger than the sum of its proper divisors (22980266).

28725310 is a wasteful number, since it uses less digits than its factorization.

28725310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872538.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 28725310 is about 5359.5997984924. The cubic root of 28725310 is about 306.2585636922.

The spelling of 28725310 in words is "twenty-eight million, seven hundred twenty-five thousand, three hundred ten".