28359657 has 12 divisors (see below), whose sum is σ = 41483520. Its totient is φ = 18666648.

The previous prime is 28359631. The next prime is 28359671. The reversal of 28359657 is 75695382.

It is a happy number.

28359657 is a `hidden beast` number, since 2 + 8 + 3 + 596 + 57 = 666.

It is not a de Polignac number, because 28359657 - 2¹⁰ = 28358633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28359607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19233 + ... + 20654.

It is an arithmetic number, because the mean of its divisors is an integer number (3456960).

Almost surely, 2^28359657 is an apocalyptic number.

It is an amenable number.

28359657 is a deficient number, since it is larger than the sum of its proper divisors (13123863).

28359657 is a wasteful number, since it uses less digits than its factorization.

28359657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39972 (or 39969 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 28359657 is about 5325.3785780919. The cubic root of 28359657 is about 304.9535251233.

The spelling of 28359657 in words is "twenty-eight million, three hundred fifty-nine thousand, six hundred fifty-seven".