28810544 has 40 divisors (see below), whose sum is σ = 64855968. Its totient is φ = 12142080.

The previous prime is 28810519. The next prime is 28810567. The reversal of 28810544 is 44501882.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28810544.

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, 4724 + ... + 8940.

Almost surely, 2^28810544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28810544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32427984).

28810544 is an abundant number, since it is smaller than the sum of its proper divisors (36045424).

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

28810544 is a wasteful number, since it uses less digits than its factorization.

28810544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 28810544 is about 5367.5454352991. The cubic root of 28810544 is about 306.5611756463.

The spelling of 28810544 in words is "twenty-eight million, eight hundred ten thousand, five hundred forty-four".