74444636 has 24 divisors (see below), whose sum is σ = 150990336. Its totient is φ = 31454640.

The previous prime is 74444621. The next prime is 74444639. The reversal of 74444636 is 63644447.

It is a self number, because there is not a number n which added to its sum of digits gives 74444636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74444639) 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, 16736 + ... + 20711.

It is an arithmetic number, because the mean of its divisors is an integer number (6291264).

Almost surely, 2^74444636 is an apocalyptic number.

It is an amenable number.

74444636 is an abundant number, since it is smaller than the sum of its proper divisors (76545700).

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

74444636 is a wasteful number, since it uses less digits than its factorization.

74444636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37529 (or 37527 counting only the distinct ones).

The product of its digits is 193536, while the sum is 38.

The square root of 74444636 is about 8628.1305043445. The cubic root of 74444636 is about 420.6728368886.

The spelling of 74444636 in words is "seventy-four million, four hundred forty-four thousand, six hundred thirty-six".