44290644 has 24 divisors (see below), whose sum is σ = 109424448. Its totient is φ = 13895040.

The previous prime is 44290643. The next prime is 44290657. The reversal of 44290644 is 44609244.

It is a super-2 number, since 2×44290644² = 3923322291869472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44290643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108352 + ... + 108759.

It is an arithmetic number, because the mean of its divisors is an integer number (4559352).

Almost surely, 2^44290644 is an apocalyptic number.

It is an amenable number.

44290644 is an abundant number, since it is smaller than the sum of its proper divisors (65133804).

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

44290644 is a wasteful number, since it uses less digits than its factorization.

44290644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217135 (or 217133 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 44290644 is about 6655.1216367547. The cubic root of 44290644 is about 353.8104574382.

Adding to 44290644 its reverse (44609244), we get a palindrome (88899888).

The spelling of 44290644 in words is "forty-four million, two hundred ninety thousand, six hundred forty-four".