44396640 has 192 divisors, whose sum is σ = 159667200. Its totient is φ = 11515392.

The previous prime is 44396603. The next prime is 44396641. The reversal of 44396640 is 4669344.

44396640 is a `hidden beast` number, since 4 + 4 + 3 + 9 + 6 + 640 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 44396595 and 44396604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44396641) 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, 185641 + ... + 185879.

It is an arithmetic number, because the mean of its divisors is an integer number (831600).

Almost surely, 2^44396640 is an apocalyptic number.

44396640 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 44396640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600).

44396640 is an abundant number, since it is smaller than the sum of its proper divisors (115270560).

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

44396640 is a wasteful number, since it uses less digits than its factorization.

44396640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 44396640 is about 6663.0803687184. The cubic root of 44396640 is about 354.0924779938.

The spelling of 44396640 in words is "forty-four million, three hundred ninety-six thousand, six hundred forty".