28164608 has 20 divisors (see below), whose sum is σ = 56275230. Its totient is φ = 14082048.

The previous prime is 28164599. The next prime is 28164637. The reversal of 28164608 is 80646182.

It can be written as a sum of positive squares in only one way, i.e., 20502784 + 7661824 = 4528^2 + 2768^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26993 + ... + 28016.

Almost surely, 2^28164608 is an apocalyptic number.

It is an amenable number.

28164608 is a deficient number, since it is larger than the sum of its proper divisors (28110622).

28164608 is an frugal number, since it uses more digits than its factorization.

28164608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55027 (or 55011 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 28164608 is about 5307.0338231445. The cubic root of 28164608 is about 304.2527906575.

The spelling of 28164608 in words is "twenty-eight million, one hundred sixty-four thousand, six hundred eight".