726708672 has 140 divisors (see below), whose sum is σ = 2176704816. Its totient is φ = 239708160.

The previous prime is 726708617. The next prime is 726708679. The reversal of 726708672 is 276807627.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726708679) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 533272 + ... + 534632.

Almost surely, 2^726708672 is an apocalyptic number.

726708672 is a gapful number since it is divisible by the number (72) 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 726708672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088352408).

726708672 is an abundant number, since it is smaller than the sum of its proper divisors (1449996144).

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

726708672 is a wasteful number, since it uses less digits than its factorization.

726708672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 726708672 is about 26957.5346053752. The cubic root of 726708672 is about 899.0560770232.

The spelling of 726708672 in words is "seven hundred twenty-six million, seven hundred eight thousand, six hundred seventy-two".