724734938 has 4 divisors (see below), whose sum is σ = 1087102410. Its totient is φ = 362367468.

The previous prime is 724734931. The next prime is 724734949. The reversal of 724734938 is 839437427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 540237049 + 184497889 = 23243^2 + 13583^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 724734892 and 724734901.

It is not an unprimeable number, because it can be changed into a prime (724734931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181183733 + ... + 181183736.

Almost surely, 2^724734938 is an apocalyptic number.

724734938 is a deficient number, since it is larger than the sum of its proper divisors (362367472).

724734938 is a wasteful number, since it uses less digits than its factorization.

724734938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362367471.

The product of its digits is 1016064, while the sum is 47.

The square root of 724734938 is about 26920.9015079362. The cubic root of 724734938 is about 898.2413963723.

The spelling of 724734938 in words is "seven hundred twenty-four million, seven hundred thirty-four thousand, nine hundred thirty-eight".