726390272 has 40 divisors (see below), whose sum is σ = 1453838496. Its totient is φ = 362575872.

The previous prime is 726390251. The next prime is 726390293. The reversal of 726390272 is 272093627.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (726390251) and next prime (726390293).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 509753 + ... + 511175.

Almost surely, 2^726390272 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 726390272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726919248).

726390272 is an abundant number, since it is smaller than the sum of its proper divisors (727448224).

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

726390272 is an equidigital number, since it uses as much as digits as its factorization.

726390272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 726390272 is about 26951.6283738107. The cubic root of 726390272 is about 898.9247537556.

The spelling of 726390272 in words is "seven hundred twenty-six million, three hundred ninety thousand, two hundred seventy-two".