726713540 has 96 divisors (see below), whose sum is σ = 1781654784. Its totient is φ = 243855360.

The previous prime is 726713531. The next prime is 726713567. The reversal of 726713540 is 45317627.

It is a super-2 number, since 2×726713540² = 1056225138438663200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 726713540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2156252 + ... + 2156588.

It is an arithmetic number, because the mean of its divisors is an integer number (18558904).

Almost surely, 2^726713540 is an apocalyptic number.

726713540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726713540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890827392).

726713540 is an abundant number, since it is smaller than the sum of its proper divisors (1054941244).

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

726713540 is a wasteful number, since it uses less digits than its factorization.

726713540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 726713540 is about 26957.6248953798. The cubic root of 726713540 is about 899.0580845197.

The spelling of 726713540 in words is "seven hundred twenty-six million, seven hundred thirteen thousand, five hundred forty".