44457720 has 256 divisors, whose sum is σ = 157593600. Its totient is φ = 9953280.

The previous prime is 44457709. The next prime is 44457727. The reversal of 44457720 is 2775444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44457727) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1201542 + ... + 1201578.

It is an arithmetic number, because the mean of its divisors is an integer number (615600).

Almost surely, 2^44457720 is an apocalyptic number.

44457720 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 44457720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78796800).

44457720 is an abundant number, since it is smaller than the sum of its proper divisors (113135880).

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

44457720 is a wasteful number, since it uses less digits than its factorization.

44457720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 44457720 is about 6667.6622589930. The cubic root of 44457720 is about 354.2547880071.

The spelling of 44457720 in words is "forty-four million, four hundred fifty-seven thousand, seven hundred twenty".