44291772 has 120 divisors (see below), whose sum is σ = 134977920. Its totient is φ = 12402720.

The previous prime is 44291761. The next prime is 44291789. The reversal of 44291772 is 27719244.

It is a super-2 number, since 2×44291772² = 3923522133799968, which contains 22 as substring.

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 133647 + ... + 133977.

It is an arithmetic number, because the mean of its divisors is an integer number (1124816).

Almost surely, 2^44291772 is an apocalyptic number.

44291772 is a gapful number since it is divisible by the number (42) 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 44291772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67488960).

44291772 is an abundant number, since it is smaller than the sum of its proper divisors (90686148).

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

44291772 is a wasteful number, since it uses less digits than its factorization.

44291772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 402 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 44291772 is about 6655.2063829757. The cubic root of 44291772 is about 353.8134610433.

The spelling of 44291772 in words is "forty-four million, two hundred ninety-one thousand, seven hundred seventy-two".