28538608 has 40 divisors (see below), whose sum is σ = 66523520. Its totient is φ = 11586240.

The previous prime is 28538593. The next prime is 28538611. The reversal of 28538608 is 80683582.

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, 4578 + ... + 8833.

It is an arithmetic number, because the mean of its divisors is an integer number (1663088).

Almost surely, 2^28538608 is an apocalyptic number.

28538608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28538608 is an abundant number, since it is smaller than the sum of its proper divisors (37984912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28538608 is a wasteful number, since it uses less digits than its factorization.

28538608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13445 (or 13439 counting only the distinct ones).

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

The square root of 28538608 is about 5342.1538727371. The cubic root of 28538608 is about 305.5936052133.

The spelling of 28538608 in words is "twenty-eight million, five hundred thirty-eight thousand, six hundred eight".