44115140 has 48 divisors (see below), whose sum is σ = 96090624. Its totient is φ = 17001600.

The previous prime is 44115121. The next prime is 44115143. The reversal of 44115140 is 4151144.

It is a super-2 number, since 2×44115140² = 3892291154439200, 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 (44115143) 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, 66410 + ... + 67070.

It is an arithmetic number, because the mean of its divisors is an integer number (2001888).

Almost surely, 2^44115140 is an apocalyptic number.

It is an amenable number.

44115140 is an abundant number, since it is smaller than the sum of its proper divisors (51975484).

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

44115140 is a wasteful number, since it uses less digits than its factorization.

44115140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 44115140 is about 6641.9229143374. The cubic root of 44115140 is about 353.3425079695.

Adding to 44115140 its reverse (4151144), we get a palindrome (48266284).

The spelling of 44115140 in words is "forty-four million, one hundred fifteen thousand, one hundred forty".