744131428 has 24 divisors (see below), whose sum is σ = 1372572320. Its totient is φ = 352019520.

The previous prime is 744131419. The next prime is 744131441. The reversal of 744131428 is 824131447.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 744131393 and 744131402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55600 + ... + 67672.

Almost surely, 2^744131428 is an apocalyptic number.

It is an amenable number.

744131428 is a deficient number, since it is larger than the sum of its proper divisors (628440892).

744131428 is a wasteful number, since it uses less digits than its factorization.

744131428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12907 (or 12905 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 744131428 is about 27278.7724797140. The cubic root of 744131428 is about 906.1843322501.

The spelling of 744131428 in words is "seven hundred forty-four million, one hundred thirty-one thousand, four hundred twenty-eight".