28528588 has 12 divisors (see below), whose sum is σ = 54463752. Its totient is φ = 12967520.

The previous prime is 28528571. The next prime is 28528603. The reversal of 28528588 is 88582582.

28528588 = T₂₂₇₂ + T₂₂₇₃ + ... + T₂₂₈₂.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324145 + ... + 324232.

It is an arithmetic number, because the mean of its divisors is an integer number (4538646).

Almost surely, 2^28528588 is an apocalyptic number.

It is an amenable number.

28528588 is a deficient number, since it is larger than the sum of its proper divisors (25935164).

28528588 is a wasteful number, since it uses less digits than its factorization.

28528588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648392 (or 648390 counting only the distinct ones).

The product of its digits is 409600, while the sum is 46.

The square root of 28528588 is about 5341.2159664256. The cubic root of 28528588 is about 305.5578360503.

The spelling of 28528588 in words is "twenty-eight million, five hundred twenty-eight thousand, five hundred eighty-eight".