726985920 has 112 divisors (see below), whose sum is σ = 2387864160. Its totient is φ = 187170816.

The previous prime is 726985873. The next prime is 726985939. The reversal of 726985920 is 29589627.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 726985920.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14784 + ... + 40896.

Almost surely, 2^726985920 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 726985920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1193932080).

726985920 is an abundant number, since it is smaller than the sum of its proper divisors (1660878240).

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

726985920 is a wasteful number, since it uses less digits than its factorization.

726985920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26162 (or 26152 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 726985920 is about 26962.6764250139. The cubic root of 726985920 is about 899.1703960146.

The spelling of 726985920 in words is "seven hundred twenty-six million, nine hundred eighty-five thousand, nine hundred twenty".