44991072 has 192 divisors, whose sum is σ = 154344960. Its totient is φ = 12483072.

The previous prime is 44991071. The next prime is 44991077. The reversal of 44991072 is 27019944.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44991071) 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, 259978 + ... + 260150.

It is an arithmetic number, because the mean of its divisors is an integer number (803880).

Almost surely, 2^44991072 is an apocalyptic number.

44991072 is a gapful number since it is divisible by the number (42) 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 44991072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77172480).

44991072 is an abundant number, since it is smaller than the sum of its proper divisors (109353888).

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

44991072 is a wasteful number, since it uses less digits than its factorization.

44991072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 228 counting only the distinct ones).

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

The square root of 44991072 is about 6707.5384456595. The cubic root of 44991072 is about 355.6658059721.

The spelling of 44991072 in words is "forty-four million, nine hundred ninety-one thousand, seventy-two".