28727670 has 32 divisors (see below), whose sum is σ = 69215328. Its totient is φ = 7630848.

The previous prime is 28727623. The next prime is 28727683. The reversal of 28727670 is 7672782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6582 + ... + 10038.

It is an arithmetic number, because the mean of its divisors is an integer number (2162979).

Almost surely, 2^28727670 is an apocalyptic number.

28727670 is an abundant number, since it is smaller than the sum of its proper divisors (40487658).

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

28727670 is a wasteful number, since it uses less digits than its factorization.

28727670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 28727670 is about 5359.8199596628. The cubic root of 28727670 is about 306.2669506098.

The spelling of 28727670 in words is "twenty-eight million, seven hundred twenty-seven thousand, six hundred seventy".