744731136 has 120 divisors (see below), whose sum is σ = 2223858780. Its totient is φ = 239640576.

The previous prime is 744731123. The next prime is 744731137. The reversal of 744731136 is 631137447.

744731136 is a `hidden beast` number, since 74 + 473 + 113 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 689377536 + 55353600 = 26256^2 + 7440^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 744731136.

It is not an unprimeable number, because it can be changed into a prime (744731137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130846 + ... + 136418.

Almost surely, 2^744731136 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 744731136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1111929390).

744731136 is an abundant number, since it is smaller than the sum of its proper divisors (1479127644).

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

744731136 is a wasteful number, since it uses less digits than its factorization.

744731136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626 (or 5607 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 744731136 is about 27289.7624760642. The cubic root of 744731136 is about 906.4277032675.

It can be divided in two parts, 7447 and 31136, that added together give a palindrome (38583).

The spelling of 744731136 in words is "seven hundred forty-four million, seven hundred thirty-one thousand, one hundred thirty-six".