726395240 has 32 divisors (see below), whose sum is σ = 1658789280. Its totient is φ = 286220352.

The previous prime is 726395239. The next prime is 726395273. The reversal of 726395240 is 42593627.

It is a junction number, because it is equal to n+sod(n) for n = 726395194 and 726395203.

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, 132842 + ... + 138201.

It is an arithmetic number, because the mean of its divisors is an integer number (51837165).

Almost surely, 2^726395240 is an apocalyptic number.

It is an amenable number.

726395240 is an abundant number, since it is smaller than the sum of its proper divisors (932394040).

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

726395240 is a wasteful number, since it uses less digits than its factorization.

726395240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271121 (or 271117 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 726395240 is about 26951.7205387708. The cubic root of 726395240 is about 898.9268030892.

The spelling of 726395240 in words is "seven hundred twenty-six million, three hundred ninety-five thousand, two hundred forty".