44431720 has 64 divisors (see below), whose sum is σ = 103550400. Its totient is φ = 17149440.

The previous prime is 44431697. The next prime is 44431753. The reversal of 44431720 is 2713444.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157980 + ... + 158260.

It is an arithmetic number, because the mean of its divisors is an integer number (1617975).

Almost surely, 2^44431720 is an apocalyptic number.

44431720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44431720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51775200).

44431720 is an abundant number, since it is smaller than the sum of its proper divisors (59118680).

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

44431720 is a wasteful number, since it uses less digits than its factorization.

44431720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 44431720 is about 6665.7122650171. The cubic root of 44431720 is about 354.1857154845.

The spelling of 44431720 in words is "forty-four million, four hundred thirty-one thousand, seven hundred twenty".