726248137 has 8 divisors (see below), whose sum is σ = 739737792. Its totient is φ = 712849200.

The previous prime is 726248119. The next prime is 726248179. The reversal of 726248137 is 731842627.

726248137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726248137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 726248137.

It is not an unprimeable number, because it can be changed into a prime (726245137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6414 + ... + 38647.

It is an arithmetic number, because the mean of its divisors is an integer number (92467224).

Almost surely, 2^726248137 is an apocalyptic number.

It is an amenable number.

726248137 is a deficient number, since it is larger than the sum of its proper divisors (13489655).

726248137 is a wasteful number, since it uses less digits than its factorization.

726248137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45359.

The product of its digits is 112896, while the sum is 40.

The square root of 726248137 is about 26948.9913911449. The cubic root of 726248137 is about 898.8661181482.

The spelling of 726248137 in words is "seven hundred twenty-six million, two hundred forty-eight thousand, one hundred thirty-seven".