44455640 has 32 divisors (see below), whose sum is σ = 100710000. Its totient is φ = 17660544.

The previous prime is 44455633. The next prime is 44455661. The reversal of 44455640 is 4655444.

44455640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 44455597 and 44455606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2231 + ... + 9689.

Almost surely, 2^44455640 is an apocalyptic number.

44455640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44455640 is an abundant number, since it is smaller than the sum of its proper divisors (56254360).

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

44455640 is a wasteful number, since it uses less digits than its factorization.

44455640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7619 (or 7615 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 44455640 is about 6667.5062804620. The cubic root of 44455640 is about 354.2492631964.

The spelling of 44455640 in words is "forty-four million, four hundred fifty-five thousand, six hundred forty".