44028640 has 48 divisors (see below), whose sum is σ = 110143152. Its totient is φ = 16574464.

The previous prime is 44028599. The next prime is 44028679. The reversal of 44028640 is 4682044.

It is a super-2 number, since 2×44028640² = 3877042280499200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44028599 and 44028608.

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, 5374 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (2294649).

Almost surely, 2^44028640 is an apocalyptic number.

44028640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44028640 is an abundant number, since it is smaller than the sum of its proper divisors (66114512).

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

44028640 is a wasteful number, since it uses less digits than its factorization.

44028640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16219 (or 16211 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 44028640 is about 6635.4080507532. The cubic root of 44028640 is about 353.1114147801. Note that the first 3 decimals are identical.

The spelling of 44028640 in words is "forty-four million, twenty-eight thousand, six hundred forty".