44345664 has 112 divisors (see below), whose sum is σ = 142280640. Its totient is φ = 13432320.

The previous prime is 44345591. The next prime is 44345671. The reversal of 44345664 is 46654344.

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

It is a congruent number.

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, 17842 + ... + 20174.

Almost surely, 2^44345664 is an apocalyptic number.

44345664 is a gapful number since it is divisible by the number (44) 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 44345664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71140320).

44345664 is an abundant number, since it is smaller than the sum of its proper divisors (97934976).

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

44345664 is a wasteful number, since it uses less digits than its factorization.

44345664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365 (or 2349 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 44345664 is about 6659.2540122749. The cubic root of 44345664 is about 353.9569036878.

The spelling of 44345664 in words is "forty-four million, three hundred forty-five thousand, six hundred sixty-four".