731426 has 8 divisors (see below), whose sum is σ = 1102620. Its totient is φ = 363888.

The previous prime is 731413. The next prime is 731447. The reversal of 731426 is 624137.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 7225 = 851^2 + 85^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 731426.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341 + ... + 1256.

2⁷³¹⁴²⁶ is an apocalyptic number.

731426 is a deficient number, since it is larger than the sum of its proper divisors (371194).

731426 is a wasteful number, since it uses less digits than its factorization.

731426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828.

The product of its digits is 1008, while the sum is 23.

The square root of 731426 is about 855.2344707740. The cubic root of 731426 is about 90.0997248496.

The spelling of 731426 in words is "seven hundred thirty-one thousand, four hundred twenty-six".