28545544 has 48 divisors (see below), whose sum is σ = 57196800. Its totient is φ = 13347360.

The previous prime is 28545527. The next prime is 28545563. The reversal of 28545544 is 44554582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361297 + ... + 361375.

It is an arithmetic number, because the mean of its divisors is an integer number (1191600).

Almost surely, 2^28545544 is an apocalyptic number.

It is an amenable number.

28545544 is an abundant number, since it is smaller than the sum of its proper divisors (28651256).

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

28545544 is a wasteful number, since it uses less digits than its factorization.

28545544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 159 counting only the distinct ones).

The product of its digits is 128000, while the sum is 37.

The square root of 28545544 is about 5342.8030096570. The cubic root of 28545544 is about 305.6183602814.

The spelling of 28545544 in words is "twenty-eight million, five hundred forty-five thousand, five hundred forty-four".