724742530 has 8 divisors (see below), whose sum is σ = 1304536572. Its totient is φ = 289897008.

The previous prime is 724742503. The next prime is 724742531. The reversal of 724742530 is 35247427.

It can be written as a sum of positive squares in 2 ways, for example, as 721513321 + 3229209 = 26861^2 + 1797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (724742531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36237117 + ... + 36237136.

Almost surely, 2^724742530 is an apocalyptic number.

724742530 is a deficient number, since it is larger than the sum of its proper divisors (579794042).

724742530 is a wasteful number, since it uses less digits than its factorization.

724742530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72474260.

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 724742530 is about 26921.0425132460. The cubic root of 724742530 is about 898.2445328868.

Adding to 724742530 its reverse (35247427), we get a palindrome (759989957).

The spelling of 724742530 in words is "seven hundred twenty-four million, seven hundred forty-two thousand, five hundred thirty".