28649164 has 12 divisors (see below), whose sum is σ = 50174488. Its totient is φ = 14313600.

The previous prime is 28649149. The next prime is 28649167. The reversal of 28649164 is 46194682.

It is not an unprimeable number, because it can be changed into a prime (28649167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6844 + ... + 10204.

Almost surely, 2^28649164 is an apocalyptic number.

It is an amenable number.

28649164 is a deficient number, since it is larger than the sum of its proper divisors (21525324).

28649164 is a wasteful number, since it uses less digits than its factorization.

28649164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496 (or 5494 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 28649164 is about 5352.4913825246. The cubic root of 28649164 is about 305.9877107856.

The spelling of 28649164 in words is "twenty-eight million, six hundred forty-nine thousand, one hundred sixty-four".