28957564 has 6 divisors (see below), whose sum is σ = 50675744. Its totient is φ = 14478780.

The previous prime is 28957561. The next prime is 28957637. The reversal of 28957564 is 46575982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28957561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3619692 + ... + 3619699.

Almost surely, 2^28957564 is an apocalyptic number.

It is an amenable number.

28957564 is a deficient number, since it is larger than the sum of its proper divisors (21718180).

28957564 is a wasteful number, since it uses less digits than its factorization.

28957564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7239395 (or 7239393 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 28957564 is about 5381.2232810022. The cubic root of 28957564 is about 307.0817509795.

The spelling of 28957564 in words is "twenty-eight million, nine hundred fifty-seven thousand, five hundred sixty-four".