44122540 has 72 divisors (see below), whose sum is σ = 117612432. Its totient is φ = 13749120.

The previous prime is 44122523. The next prime is 44122567. The reversal of 44122540 is 4522144.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8734 + ... + 12826.

It is an arithmetic number, because the mean of its divisors is an integer number (1633506).

Almost surely, 2^44122540 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 44122540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58806216).

44122540 is an abundant number, since it is smaller than the sum of its proper divisors (73489892).

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

44122540 is a wasteful number, since it uses less digits than its factorization.

44122540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4127 (or 4118 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 44122540 is about 6642.4799585697. The cubic root of 44122540 is about 353.3622637599.

Adding to 44122540 its reverse (4522144), we get a palindrome (48644684).

The spelling of 44122540 in words is "forty-four million, one hundred twenty-two thousand, five hundred forty".