744385731 has 8 divisors (see below), whose sum is σ = 1035667200. Its totient is φ = 474680712.

The previous prime is 744385729. The next prime is 744385739. The reversal of 744385731 is 137583447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 744385731 - 2¹ = 744385729 is a prime.

It is a super-2 number, since 2×744385731² = 1108220233032808722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (744385739) 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, 5394031 + ... + 5394168.

It is an arithmetic number, because the mean of its divisors is an integer number (129458400).

Almost surely, 2^744385731 is an apocalyptic number.

744385731 is a deficient number, since it is larger than the sum of its proper divisors (291281469).

744385731 is a wasteful number, since it uses less digits than its factorization.

744385731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788225.

The product of its digits is 282240, while the sum is 42.

The square root of 744385731 is about 27283.4332700267. The cubic root of 744385731 is about 906.2875484022.

The spelling of 744385731 in words is "seven hundred forty-four million, three hundred eighty-five thousand, seven hundred thirty-one".