726243672 has 128 divisors (see below), whose sum is σ = 2396874240. Its totient is φ = 177530880.

The previous prime is 726243667. The next prime is 726243691. The reversal of 726243672 is 276342627.

It is a super-2 number, since 2×726243672² = 1054859742240087168, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 726243672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19858 + ... + 42974.

It is an arithmetic number, because the mean of its divisors is an integer number (18725580).

Almost surely, 2^726243672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726243672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198437120).

726243672 is an abundant number, since it is smaller than the sum of its proper divisors (1670630568).

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

726243672 is a wasteful number, since it uses less digits than its factorization.

726243672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23161 (or 23157 counting only the distinct ones).

The product of its digits is 169344, while the sum is 39.

The square root of 726243672 is about 26948.9085493272. The cubic root of 726243672 is about 898.8642760572.

The spelling of 726243672 in words is "seven hundred twenty-six million, two hundred forty-three thousand, six hundred seventy-two".