28704460 has 24 divisors (see below), whose sum is σ = 62901216. Its totient is φ = 10982400.

The previous prime is 28704457. The next prime is 28704479. The reversal of 28704460 is 6440782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30741 + ... + 31660.

It is an arithmetic number, because the mean of its divisors is an integer number (2620884).

Almost surely, 2^28704460 is an apocalyptic number.

28704460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28704460 is an abundant number, since it is smaller than the sum of its proper divisors (34196756).

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

28704460 is a wasteful number, since it uses less digits than its factorization.

28704460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62433 (or 62431 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 28704460 is about 5357.6543374876. The cubic root of 28704460 is about 306.1844474439.

The spelling of 28704460 in words is "twenty-eight million, seven hundred four thousand, four hundred sixty".