28658164 has 6 divisors (see below), whose sum is σ = 50151794. Its totient is φ = 14329080.

The previous prime is 28658153. The next prime is 28658173. The reversal of 28658164 is 46185682.

It can be written as a sum of positive squares in only one way, i.e., 18147600 + 10510564 = 4260^2 + 3242^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3582267 + ... + 3582274.

Almost surely, 2^28658164 is an apocalyptic number.

It is an amenable number.

28658164 is a deficient number, since it is larger than the sum of its proper divisors (21493630).

28658164 is a wasteful number, since it uses less digits than its factorization.

28658164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7164545 (or 7164543 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 28658164 is about 5353.3320464922. The cubic root of 28658164 is about 306.0197489639.

The spelling of 28658164 in words is "twenty-eight million, six hundred fifty-eight thousand, one hundred sixty-four".