724657460 has 12 divisors (see below), whose sum is σ = 1521780708. Its totient is φ = 289862976.

The previous prime is 724657433. The next prime is 724657463. The reversal of 724657460 is 64756427.

It can be written as a sum of positive squares in 2 ways, for example, as 377058724 + 347598736 = 19418^2 + 18644^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724657463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18116417 + ... + 18116456.

It is an arithmetic number, because the mean of its divisors is an integer number (126815059).

Almost surely, 2^724657460 is an apocalyptic number.

It is an amenable number.

724657460 is an abundant number, since it is smaller than the sum of its proper divisors (797123248).

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

724657460 is a wasteful number, since it uses less digits than its factorization.

724657460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36232882 (or 36232880 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The square root of 724657460 is about 26919.4624760600. The cubic root of 724657460 is about 898.2093863121.

The spelling of 724657460 in words is "seven hundred twenty-four million, six hundred fifty-seven thousand, four hundred sixty".