28604936 has 8 divisors (see below), whose sum is σ = 53634270. Its totient is φ = 14302464.

The previous prime is 28604923. The next prime is 28604941. The reversal of 28604936 is 63940682.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 8444836 = 4490^2 + 2906^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28604936.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1787801 + ... + 1787816.

Almost surely, 2^28604936 is an apocalyptic number.

It is an amenable number.

28604936 is a deficient number, since it is larger than the sum of its proper divisors (25029334).

28604936 is a wasteful number, since it uses less digits than its factorization.

28604936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575623 (or 3575619 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 28604936 is about 5348.3582527725. The cubic root of 28604936 is about 305.8301704753.

The spelling of 28604936 in words is "twenty-eight million, six hundred four thousand, nine hundred thirty-six".