723380 has 24 divisors (see below), whose sum is σ = 1736448. Its totient is φ = 247968.

The previous prime is 723379. The next prime is 723391. The reversal of 723380 is 83327.

723380 = 85² + 86² + ... + 140².

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2444 + ... + 2723.

It is an arithmetic number, because the mean of its divisors is an integer number (72352).

2⁷²³³⁸⁰ is an apocalyptic number.

723380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

723380 is an abundant number, since it is smaller than the sum of its proper divisors (1013068).

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

723380 is a wasteful number, since it uses less digits than its factorization.

723380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183 (or 5181 counting only the distinct ones).

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

The square root of 723380 is about 850.5174895321. The cubic root of 723380 is about 89.7681274051.

The spelling of 723380 in words is "seven hundred twenty-three thousand, three hundred eighty".