724019402 has 8 divisors (see below), whose sum is σ = 1100906436. Its totient is φ = 357050592.

The previous prime is 724019399. The next prime is 724019407. The reversal of 724019402 is 204910427.

724019402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 719902561 + 4116841 = 26831^2 + 2029^2 .

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 (724019407) 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, 2479373 + ... + 2479664.

Almost surely, 2^724019402 is an apocalyptic number.

724019402 is a deficient number, since it is larger than the sum of its proper divisors (376887034).

724019402 is a wasteful number, since it uses less digits than its factorization.

724019402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959112.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 724019402 is about 26907.6086265577. The cubic root of 724019402 is about 897.9456856417.

Adding to 724019402 its reverse (204910427), we get a palindrome (928929829).

The spelling of 724019402 in words is "seven hundred twenty-four million, nineteen thousand, four hundred two".