726186540 has 24 divisors (see below), whose sum is σ = 2033322480. Its totient is φ = 193649728.

The previous prime is 726186529. The next prime is 726186551. The reversal of 726186540 is 45681627.

It is an interprime number because it is at equal distance from previous prime (726186529) and next prime (726186551).

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, 6051495 + ... + 6051614.

It is an arithmetic number, because the mean of its divisors is an integer number (84721770).

Almost surely, 2^726186540 is an apocalyptic number.

It is an amenable number.

726186540 is an abundant number, since it is smaller than the sum of its proper divisors (1307135940).

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

726186540 is a wasteful number, since it uses less digits than its factorization.

726186540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12103121 (or 12103119 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 726186540 is about 26947.8485226558. The cubic root of 726186540 is about 898.8407048774.

The spelling of 726186540 in words is "seven hundred twenty-six million, one hundred eighty-six thousand, five hundred forty".