726488020 has 24 divisors (see below), whose sum is σ = 1562836968. Its totient is φ = 283507200.

The previous prime is 726488011. The next prime is 726488039. The reversal of 726488020 is 20884627.

It can be written as a sum of positive squares in 4 ways, for example, as 80209936 + 646278084 = 8956^2 + 25422^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442161 + ... + 443800.

It is an arithmetic number, because the mean of its divisors is an integer number (65118207).

Almost surely, 2^726488020 is an apocalyptic number.

It is an amenable number.

726488020 is an abundant number, since it is smaller than the sum of its proper divisors (836348948).

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

726488020 is a wasteful number, since it uses less digits than its factorization.

726488020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886011 (or 886009 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 726488020 is about 26953.4417097335. The cubic root of 726488020 is about 898.9650737503.

The spelling of 726488020 in words is "seven hundred twenty-six million, four hundred eighty-eight thousand, twenty".