738636444 has 144 divisors (see below), whose sum is σ = 2398136832. Its totient is φ = 186316416.

The previous prime is 738636427. The next prime is 738636463. The reversal of 738636444 is 444636837.

738636444 is a `hidden beast` number, since 7 + 3 + 8 + 636 + 4 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 738636444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70447 + ... + 80249.

It is an arithmetic number, because the mean of its divisors is an integer number (16653728).

Almost surely, 2^738636444 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 738636444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199068416).

738636444 is an abundant number, since it is smaller than the sum of its proper divisors (1659500388).

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

738636444 is a wasteful number, since it uses less digits than its factorization.

738636444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9856 (or 9851 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The square root of 738636444 is about 27177.8668037063. The cubic root of 738636444 is about 903.9482685697.

The spelling of 738636444 in words is "seven hundred thirty-eight million, six hundred thirty-six thousand, four hundred forty-four".