726634420 has 24 divisors (see below), whose sum is σ = 1575157248. Its totient is φ = 281277600.

The previous prime is 726634397. The next prime is 726634421. The reversal of 726634420 is 24436627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726634421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585376 + ... + 586615.

It is an arithmetic number, because the mean of its divisors is an integer number (65631552).

Almost surely, 2^726634420 is an apocalyptic number.

It is an amenable number.

726634420 is an abundant number, since it is smaller than the sum of its proper divisors (848522828).

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

726634420 is a wasteful number, since it uses less digits than its factorization.

726634420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172031 (or 1172029 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 726634420 is about 26956.1573671026. The cubic root of 726634420 is about 899.0254554054.

The spelling of 726634420 in words is "seven hundred twenty-six million, six hundred thirty-four thousand, four hundred twenty".