44720840 has 16 divisors (see below), whose sum is σ = 100621980. Its totient is φ = 17888320.

The previous prime is 44720807. The next prime is 44720899. The reversal of 44720840 is 4802744.

It can be written as a sum of positive squares in 2 ways, for example, as 44328964 + 391876 = 6658^2 + 626^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558971 + ... + 559050.

Almost surely, 2^44720840 is an apocalyptic number.

44720840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44720840 is an abundant number, since it is smaller than the sum of its proper divisors (55901140).

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

44720840 is a wasteful number, since it uses less digits than its factorization.

44720840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118032 (or 1118028 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 44720840 is about 6687.3642042287. The cubic root of 44720840 is about 354.9522914132.

The spelling of 44720840 in words is "forty-four million, seven hundred twenty thousand, eight hundred forty".