44421312 has 126 divisors (see below), whose sum is σ = 130800348. Its totient is φ = 13298688.

The previous prime is 44421287. The next prime is 44421347. The reversal of 44421312 is 21312444.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1200558 + ... + 1200594.

It is an arithmetic number, because the mean of its divisors is an integer number (1038098).

Almost surely, 2^44421312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65400174).

44421312 is an abundant number, since it is smaller than the sum of its proper divisors (86379036).

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

44421312 is a wasteful number, since it uses less digits than its factorization.

44421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 55 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 44421312 is about 6664.9315075250. The cubic root of 44421312 is about 354.1580576700.

Multiplying 44421312 by its product of digits (768), we get a square (34115567616 = 184704²).

Adding to 44421312 its reverse (21312444), we get a palindrome (65733756).

The spelling of 44421312 in words is "forty-four million, four hundred twenty-one thousand, three hundred twelve".