731404 has 6 divisors (see below), whose sum is σ = 1279964. Its totient is φ = 365700.

The previous prime is 731389. The next prime is 731413. The reversal of 731404 is 404137.

It is a happy number.

It is a super-2 number, since 2×731404² = 1069903622432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91422 + ... + 91429.

2⁷³¹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

731404 is a deficient number, since it is larger than the sum of its proper divisors (548560).

731404 is a wasteful number, since it uses less digits than its factorization.

731404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182855 (or 182853 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 731404 is about 855.2216087074. The cubic root of 731404 is about 90.0988214938.

The spelling of 731404 in words is "seven hundred thirty-one thousand, four hundred four".