723740 has 12 divisors (see below), whose sum is σ = 1519896. Its totient is φ = 289488.

The previous prime is 723739. The next prime is 723761. The reversal of 723740 is 47327.

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, 18074 + ... + 18113.

It is an arithmetic number, because the mean of its divisors is an integer number (126658).

2⁷²³⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

723740 is an abundant number, since it is smaller than the sum of its proper divisors (796156).

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

723740 is a wasteful number, since it uses less digits than its factorization.

723740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36196 (or 36194 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 723740 is about 850.7290990674. The cubic root of 723740 is about 89.7830163829.

The spelling of 723740 in words is "seven hundred twenty-three thousand, seven hundred forty", and thus it is an iban number.