44197920 has 192 divisors, whose sum is σ = 166803840. Its totient is φ = 10865664.

The previous prime is 44197883. The next prime is 44197921. The reversal of 44197920 is 2979144.

It is a super-2 number, since 2×44197920² = 3906912264652800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (44197921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55767 + ... + 56553.

It is an arithmetic number, because the mean of its divisors is an integer number (868770).

Almost surely, 2^44197920 is an apocalyptic number.

44197920 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 44197920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83401920).

44197920 is an abundant number, since it is smaller than the sum of its proper divisors (122605920).

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

44197920 is a wasteful number, since it uses less digits than its factorization.

44197920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 44197920 is about 6648.1516228197. The cubic root of 44197920 is about 353.5633801133.

The spelling of 44197920 in words is "forty-four million, one hundred ninety-seven thousand, nine hundred twenty".