44220312 has 48 divisors (see below), whose sum is σ = 120664440. Its totient is φ = 14629248.

The previous prime is 44220307. The next prime is 44220313. The reversal of 44220312 is 21302244.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44220313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7623 + ... + 12105.

Almost surely, 2^44220312 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 44220312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60332220).

44220312 is an abundant number, since it is smaller than the sum of its proper divisors (76444128).

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

44220312 is a wasteful number, since it uses less digits than its factorization.

44220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632 (or 4625 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 44220312 is about 6649.8354866869. The cubic root of 44220312 is about 353.6230786586.

Adding to 44220312 its reverse (21302244), we get a palindrome (65522556).

The spelling of 44220312 in words is "forty-four million, two hundred twenty thousand, three hundred twelve".