726471980 has 96 divisors (see below), whose sum is σ = 1709019648. Its totient is φ = 257587200.

The previous prime is 726471979. The next prime is 726472001. The reversal of 726471980 is 89174627.

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, 1394120 + ... + 1394640.

It is an arithmetic number, because the mean of its divisors is an integer number (17802288).

Almost surely, 2^726471980 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 726471980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (854509824).

726471980 is an abundant number, since it is smaller than the sum of its proper divisors (982547668).

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

726471980 is a wasteful number, since it uses less digits than its factorization.

726471980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 726471980 is about 26953.1441579642. The cubic root of 726471980 is about 898.9584576715.

The spelling of 726471980 in words is "seven hundred twenty-six million, four hundred seventy-one thousand, nine hundred eighty".