726243380 has 24 divisors (see below), whose sum is σ = 1546594560. Its totient is φ = 286405280.

The previous prime is 726243379. The next prime is 726243391. The reversal of 726243380 is 83342627.

It is a self number, because there is not a number n which added to its sum of digits gives 726243380.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254300 + ... + 257139.

It is an arithmetic number, because the mean of its divisors is an integer number (64441440).

Almost surely, 2^726243380 is an apocalyptic number.

It is an amenable number.

726243380 is an abundant number, since it is smaller than the sum of its proper divisors (820351180).

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

726243380 is a wasteful number, since it uses less digits than its factorization.

726243380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511519 (or 511517 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 726243380 is about 26948.9031316675. The cubic root of 726243380 is about 898.8641555887.

The spelling of 726243380 in words is "seven hundred twenty-six million, two hundred forty-three thousand, three hundred eighty".