44312240 has 80 divisors (see below), whose sum is σ = 120045888. Its totient is φ = 14896128.

The previous prime is 44312209. The next prime is 44312249. The reversal of 44312240 is 4221344.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×44312240² = 3927149227635200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (44312249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28934 + ... + 30426.

Almost surely, 2^44312240 is an apocalyptic number.

44312240 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 44312240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60022944).

44312240 is an abundant number, since it is smaller than the sum of its proper divisors (75733648).

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

44312240 is a wasteful number, since it uses less digits than its factorization.

44312240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44312240 is about 6656.7439488086. The cubic root of 44312240 is about 353.8679537730.

Adding to 44312240 its reverse (4221344), we get a palindrome (48533584).

The spelling of 44312240 in words is "forty-four million, three hundred twelve thousand, two hundred forty".