724384427 has 4 divisors (see below), whose sum is σ = 780106320. Its totient is φ = 668662536.

The previous prime is 724384411. The next prime is 724384429. The reversal of 724384427 is 724483427.

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

It is a cyclic number.

It is not a de Polignac number, because 724384427 - 2⁴ = 724384411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724384429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27860927 + ... + 27860952.

It is an arithmetic number, because the mean of its divisors is an integer number (195026580).

Almost surely, 2^724384427 is an apocalyptic number.

724384427 is a deficient number, since it is larger than the sum of its proper divisors (55721893).

724384427 is a wasteful number, since it uses less digits than its factorization.

724384427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55721892.

The product of its digits is 301056, while the sum is 41.

The square root of 724384427 is about 26914.3907046026. The cubic root of 724384427 is about 898.0965644509.

The spelling of 724384427 in words is "seven hundred twenty-four million, three hundred eighty-four thousand, four hundred twenty-seven".