44685440 has 32 divisors (see below), whose sum is σ = 106827660. Its totient is φ = 17873920.

The previous prime is 44685437. The next prime is 44685451. The reversal of 44685440 is 4458644.

It can be written as a sum of positive squares in 2 ways, for example, as 40653376 + 4032064 = 6376^2 + 2008^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 44685440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34271 + ... + 35550.

Almost surely, 2^44685440 is an apocalyptic number.

44685440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44685440 is an abundant number, since it is smaller than the sum of its proper divisors (62142220).

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

44685440 is an equidigital number, since it uses as much as digits as its factorization.

44685440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69840 (or 69828 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The square root of 44685440 is about 6684.7168975208. The cubic root of 44685440 is about 354.8586093025.

The spelling of 44685440 in words is "forty-four million, six hundred eighty-five thousand, four hundred forty".