44013636 has 18 divisors (see below), whose sum is σ = 111256782. Its totient is φ = 14671200.

The previous prime is 44013617. The next prime is 44013643. The reversal of 44013636 is 63631044.

It can be written as a sum of positive squares in only one way, i.e., 27562500 + 16451136 = 5250^2 + 4056^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611265 + ... + 611336.

Almost surely, 2^44013636 is an apocalyptic number.

It is an amenable number.

44013636 is an abundant number, since it is smaller than the sum of its proper divisors (67243146).

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

44013636 is a wasteful number, since it uses less digits than its factorization.

44013636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222611 (or 1222606 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 44013636 is about 6634.2773532616. The cubic root of 44013636 is about 353.0712993339.

The spelling of 44013636 in words is "forty-four million, thirteen thousand, six hundred thirty-six".