726271020 has 72 divisors (see below), whose sum is σ = 2215427760. Its totient is φ = 192581760.

The previous prime is 726271003. The next prime is 726271079. The reversal of 726271020 is 20172627.

726271020 is a `hidden beast` number, since 7 + 2 + 627 + 10 + 20 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20950 + ... + 43490.

It is an arithmetic number, because the mean of its divisors is an integer number (30769830).

Almost surely, 2^726271020 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 726271020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107713880).

726271020 is an abundant number, since it is smaller than the sum of its proper divisors (1489156740).

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

726271020 is a wasteful number, since it uses less digits than its factorization.

726271020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22735 (or 22730 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 726271020 is about 26949.4159491444. The cubic root of 726271020 is about 898.8755586944.

The spelling of 726271020 in words is "seven hundred twenty-six million, two hundred seventy-one thousand, twenty".