744424 has 8 divisors (see below), whose sum is σ = 1395810. Its totient is φ = 372208.

The previous prime is 744409. The next prime is 744431. The reversal of 744424 is 424447.

It can be written as a sum of positive squares in only one way, i.e., 476100 + 268324 = 690^2 + 518^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 744424.

It is an unprimeable number.

744424 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46519 + ... + 46534.

2⁷⁴⁴⁴²⁴ is an apocalyptic number.

It is an amenable number.

744424 is a deficient number, since it is larger than the sum of its proper divisors (651386).

744424 is a wasteful number, since it uses less digits than its factorization.

744424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93059 (or 93055 counting only the distinct ones).

The product of its digits is 3584, while the sum is 25.

The square root of 744424 is about 862.8000927214. The cubic root of 744424 is about 90.6303078936.

The spelling of 744424 in words is "seven hundred forty-four thousand, four hundred twenty-four", and thus it is an iban number.