28690576 has 10 divisors (see below), whose sum is σ = 55588022. Its totient is φ = 14345280.

The previous prime is 28690567. The next prime is 28690609. The reversal of 28690576 is 67509682.

It can be written as a sum of positive squares in only one way, i.e., 21529600 + 7160976 = 4640^2 + 2676^2 .

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, 896565 + ... + 896596.

Almost surely, 2^28690576 is an apocalyptic number.

It is an amenable number.

28690576 is a deficient number, since it is larger than the sum of its proper divisors (26897446).

28690576 is a wasteful number, since it uses less digits than its factorization.

28690576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793169 (or 1793163 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 28690576 is about 5356.3584644794. The cubic root of 28690576 is about 306.1350735783.

The spelling of 28690576 in words is "twenty-eight million, six hundred ninety thousand, five hundred seventy-six".