726733240 has 32 divisors (see below), whose sum is σ = 1636879680. Its totient is φ = 290385792.

The previous prime is 726733229. The next prime is 726733307. The reversal of 726733240 is 42337627.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 726733196 and 726733205.

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, 30769 + ... + 48991.

It is an arithmetic number, because the mean of its divisors is an integer number (51152490).

Almost surely, 2^726733240 is an apocalyptic number.

It is an amenable number.

726733240 is an abundant number, since it is smaller than the sum of its proper divisors (910146440).

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

726733240 is a wasteful number, since it uses less digits than its factorization.

726733240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19231 (or 19227 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 726733240 is about 26957.9902811764. The cubic root of 726733240 is about 899.0662084379.

The spelling of 726733240 in words is "seven hundred twenty-six million, seven hundred thirty-three thousand, two hundred forty".