44145972 has 120 divisors (see below), whose sum is σ = 127497216. Its totient is φ = 13234752.

The previous prime is 44145931. The next prime is 44145973. The reversal of 44145972 is 27954144.

It is a happy number.

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

Its product of digits (40320) is a multiple of the sum of its prime divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44145973) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 197853 + ... + 198075.

Almost surely, 2^44145972 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 44145972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63748608).

44145972 is an abundant number, since it is smaller than the sum of its proper divisors (83351244).

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

44145972 is a wasteful number, since it uses less digits than its factorization.

44145972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 288 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 44145972 is about 6644.2435235322. The cubic root of 44145972 is about 353.4248056357.

The spelling of 44145972 in words is "forty-four million, one hundred forty-five thousand, nine hundred seventy-two".