44190864 has 60 divisors (see below), whose sum is σ = 124144956. Its totient is φ = 14674176.

The previous prime is 44190859. The next prime is 44190917. The reversal of 44190864 is 46809144.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14379264 + 29811600 = 3792^2 + 5460^2 .

It is a super-2 number, since 2×44190864² = 3905664922132992, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56782 + ... + 57554.

Almost surely, 2^44190864 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 44190864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62072478).

44190864 is an abundant number, since it is smaller than the sum of its proper divisors (79954092).

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

44190864 is a wasteful number, since it uses less digits than its factorization.

44190864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184 (or 1175 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 44190864 is about 6647.6209278207. The cubic root of 44190864 is about 353.5445641752.

It can be divided in two parts, 44190 and 864, that added together give a palindrome (45054).

The spelling of 44190864 in words is "forty-four million, one hundred ninety thousand, eight hundred sixty-four".