726087140 has 24 divisors (see below), whose sum is σ = 1530221112. Its totient is φ = 289399040.

The previous prime is 726087139. The next prime is 726087143. The reversal of 726087140 is 41780627.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 206611876 + 519475264 = 14374^2 + 22792^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 726087140.

It is not an unprimeable number, because it can be changed into a prime (726087143) 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, 58979 + ... + 70218.

It is an arithmetic number, because the mean of its divisors is an integer number (63759213).

Almost surely, 2^726087140 is an apocalyptic number.

It is an amenable number.

726087140 is an abundant number, since it is smaller than the sum of its proper divisors (804133972).

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

726087140 is a wasteful number, since it uses less digits than its factorization.

726087140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129487 (or 129485 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 726087140 is about 26946.0041564607. The cubic root of 726087140 is about 898.7996920715.

The spelling of 726087140 in words is "seven hundred twenty-six million, eighty-seven thousand, one hundred forty".