28538544 has 40 divisors (see below), whose sum is σ = 75721840. Its totient is φ = 9255168.

The previous prime is 28538537. The next prime is 28538579. The reversal of 28538544 is 44583582.

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, 6259 + ... + 9810.

It is an arithmetic number, because the mean of its divisors is an integer number (1893046).

Almost surely, 2^28538544 is an apocalyptic number.

28538544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28538544 is an abundant number, since it is smaller than the sum of its proper divisors (47183296).

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

28538544 is a wasteful number, since it uses less digits than its factorization.

28538544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16117 (or 16111 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

The square root of 28538544 is about 5342.1478826405. The cubic root of 28538544 is about 305.5933767741.

The spelling of 28538544 in words is "twenty-eight million, five hundred thirty-eight thousand, five hundred forty-four".