44452640 has 24 divisors (see below), whose sum is σ = 105019740. Its totient is φ = 17780992.

The previous prime is 44452633. The next prime is 44452643. The reversal of 44452640 is 4625444.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40500496 + 3952144 = 6364^2 + 1988^2 .

It is not an unprimeable number, because it can be changed into a prime (44452643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138755 + ... + 139074.

Almost surely, 2^44452640 is an apocalyptic number.

44452640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44452640 is an abundant number, since it is smaller than the sum of its proper divisors (60567100).

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

44452640 is a wasteful number, since it uses less digits than its factorization.

44452640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277844 (or 277836 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 44452640 is about 6667.2813049998. The cubic root of 44452640 is about 354.2412944161.

The spelling of 44452640 in words is "forty-four million, four hundred fifty-two thousand, six hundred forty".