731936 has 24 divisors (see below), whose sum is σ = 1462860. Its totient is φ = 360448.

The previous prime is 731933. The next prime is 731957. The reversal of 731936 is 639137.

It can be written as a sum of positive squares in 2 ways, for example, as 712336 + 19600 = 844^2 + 140^2 .

It is a junction number, because it is equal to n+sod(n) for n = 731899 and 731908.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 731936.

It is not an unprimeable number, because it can be changed into a prime (731933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720 + ... + 2976.

2⁷³¹⁹³⁶ is an apocalyptic number.

It is an amenable number.

731936 is a deficient number, since it is larger than the sum of its proper divisors (730924).

731936 is a wasteful number, since it uses less digits than its factorization.

731936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 348 counting only the distinct ones).

The product of its digits is 3402, while the sum is 29.

The square root of 731936 is about 855.5325826642. The cubic root of 731936 is about 90.1206612049.

The spelling of 731936 in words is "seven hundred thirty-one thousand, nine hundred thirty-six".