726270340 has 12 divisors (see below), whose sum is σ = 1525167756. Its totient is φ = 290508128.

The previous prime is 726270329. The next prime is 726270343. The reversal of 726270340 is 43072627.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 578210116 + 148060224 = 24046^2 + 12168^2 .

It is not an unprimeable number, because it can be changed into a prime (726270343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18156739 + ... + 18156778.

It is an arithmetic number, because the mean of its divisors is an integer number (127097313).

Almost surely, 2^726270340 is an apocalyptic number.

It is an amenable number.

726270340 is an abundant number, since it is smaller than the sum of its proper divisors (798897416).

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

726270340 is a wasteful number, since it uses less digits than its factorization.

726270340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36313526 (or 36313524 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 726270340 is about 26949.4033329126. The cubic root of 726270340 is about 898.8752781584.

The spelling of 726270340 in words is "seven hundred twenty-six million, two hundred seventy thousand, three hundred forty".