726904980 has 72 divisors (see below), whose sum is σ = 2210208000. Its totient is φ = 193378752.

The previous prime is 726904973. The next prime is 726905033. The reversal of 726904980 is 89409627.

It is a happy number.

726904980 is a `hidden beast` number, since 72 + 6 + 90 + 498 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 74421 + ... + 83619.

Almost surely, 2^726904980 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 726904980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105104000).

726904980 is an abundant number, since it is smaller than the sum of its proper divisors (1483303020).

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

726904980 is a wasteful number, since it uses less digits than its factorization.

726904980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9653 (or 9648 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 726904980 is about 26961.1754194805. The cubic root of 726904980 is about 899.1370246425.

The spelling of 726904980 in words is "seven hundred twenty-six million, nine hundred four thousand, nine hundred eighty".