44120640 has 56 divisors (see below), whose sum is σ = 140086080. Its totient is φ = 11765248.

The previous prime is 44120597. The next prime is 44120663. The reversal of 44120640 is 4602144.

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, 22020 + ... + 23939.

Almost surely, 2^44120640 is an apocalyptic number.

44120640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44120640 is an abundant number, since it is smaller than the sum of its proper divisors (95965440).

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

44120640 is a wasteful number, since it uses less digits than its factorization.

44120640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45979 (or 45969 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 44120640 is about 6642.3369381566. The cubic root of 44120640 is about 353.3571915380.

Adding to 44120640 its reverse (4602144), we get a palindrome (48722784).

The spelling of 44120640 in words is "forty-four million, one hundred twenty thousand, six hundred forty".