723936 has 24 divisors (see below), whose sum is σ = 1900584. Its totient is φ = 241280.

The previous prime is 723923. The next prime is 723949. The reversal of 723936 is 639327.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (723923) and next prime (723949).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 3675 + ... + 3866.

It is an arithmetic number, because the mean of its divisors is an integer number (79191).

2⁷²³⁹³⁶ is an apocalyptic number.

It is an amenable number.

723936 is an abundant number, since it is smaller than the sum of its proper divisors (1176648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

723936 is a wasteful number, since it uses less digits than its factorization.

723936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7554 (or 7546 counting only the distinct ones).

The product of its digits is 6804, while the sum is 30.

The square root of 723936 is about 850.8442865766. The cubic root of 723936 is about 89.7911205285.

The spelling of 723936 in words is "seven hundred twenty-three thousand, nine hundred thirty-six".