726245172 has 72 divisors (see below), whose sum is σ = 1879701824. Its totient is φ = 236359296.

The previous prime is 726245161. The next prime is 726245197. The reversal of 726245172 is 271542627.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269343 + ... + 272025.

Almost surely, 2^726245172 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 726245172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939850912).

726245172 is an abundant number, since it is smaller than the sum of its proper divisors (1153456652).

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

726245172 is a wasteful number, since it uses less digits than its factorization.

726245172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869 (or 2864 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 726245172 is about 26948.9363797535. The cubic root of 726245172 is about 898.8648949016.

Adding to 726245172 its reverse (271542627), we get a palindrome (997787799).

The spelling of 726245172 in words is "seven hundred twenty-six million, two hundred forty-five thousand, one hundred seventy-two".