726020136 has 24 divisors (see below), whose sum is σ = 1966304730. Its totient is φ = 242006688.

The previous prime is 726020131. The next prime is 726020137. The reversal of 726020136 is 631020627.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 440748036 + 285272100 = 20994^2 + 16890^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (726020131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5041735 + ... + 5041878.

Almost surely, 2^726020136 is an apocalyptic number.

It is an amenable number.

726020136 is an abundant number, since it is smaller than the sum of its proper divisors (1240284594).

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

726020136 is a wasteful number, since it uses less digits than its factorization.

726020136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10083625 (or 10083618 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 726020136 is about 26944.7608265503. The cubic root of 726020136 is about 898.7720438624.

The spelling of 726020136 in words is "seven hundred twenty-six million, twenty thousand, one hundred thirty-six".