726047780 has 48 divisors (see below), whose sum is σ = 1550208240. Its totient is φ = 285585408.

The previous prime is 726047771. The next prime is 726047783. The reversal of 726047780 is 87740627.

It can be written as a sum of positive squares in 8 ways, for example, as 108326464 + 617721316 = 10408^2 + 24854^2 .

It is not an unprimeable number, because it can be changed into a prime (726047783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742652 + ... + 743628.

It is an arithmetic number, because the mean of its divisors is an integer number (32296005).

Almost surely, 2^726047780 is an apocalyptic number.

It is an amenable number.

726047780 is an abundant number, since it is smaller than the sum of its proper divisors (824160460).

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

726047780 is a wasteful number, since it uses less digits than its factorization.

726047780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 726047780 is about 26945.2737970873. The cubic root of 726047780 is about 898.7834509561.

The spelling of 726047780 in words is "seven hundred twenty-six million, forty-seven thousand, seven hundred eighty".