28538588 has 24 divisors (see below), whose sum is σ = 54933312. Its totient is φ = 12890304.

The previous prime is 28538579. The next prime is 28538593. The reversal of 28538588 is 88583582.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3395 + ... + 8282.

It is an arithmetic number, because the mean of its divisors is an integer number (2288888).

Almost surely, 2^28538588 is an apocalyptic number.

It is an amenable number.

28538588 is a deficient number, since it is larger than the sum of its proper divisors (26394724).

28538588 is a wasteful number, since it uses less digits than its factorization.

28538588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11741 (or 11739 counting only the distinct ones).

The product of its digits is 614400, while the sum is 47.

The square root of 28538588 is about 5342.1520008326. The cubic root of 28538588 is about 305.5935338261.

The spelling of 28538588 in words is "twenty-eight million, five hundred thirty-eight thousand, five hundred eighty-eight".