44478728 has 32 divisors (see below), whose sum is σ = 95937600. Its totient is φ = 18937152.

The previous prime is 44478703. The next prime is 44478737. The reversal of 44478728 is 82787444.

It is a nude number because it is divisible by every one of its digits.

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, 6263 + ... + 11321.

It is an arithmetic number, because the mean of its divisors is an integer number (2998050).

Almost surely, 2^44478728 is an apocalyptic number.

It is an amenable number.

44478728 is an abundant number, since it is smaller than the sum of its proper divisors (51458872).

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

44478728 is a wasteful number, since it uses less digits than its factorization.

44478728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229 (or 5225 counting only the distinct ones).

The product of its digits is 401408, while the sum is 44.

The square root of 44478728 is about 6669.2374376686. The cubic root of 44478728 is about 354.3105789372.

The spelling of 44478728 in words is "forty-four million, four hundred seventy-eight thousand, seven hundred twenty-eight".