723970426 has 8 divisors (see below), whose sum is σ = 1086106644. Its totient is φ = 361934880.

The previous prime is 723970421. The next prime is 723970441. The reversal of 723970426 is 624079327.

It can be written as a sum of positive squares in 2 ways, for example, as 718186401 + 5784025 = 26799^2 + 2405^2 .

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 (723970421) 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, 3435 + ... + 38206.

Almost surely, 2^723970426 is an apocalyptic number.

723970426 is a deficient number, since it is larger than the sum of its proper divisors (362136218).

723970426 is a wasteful number, since it uses less digits than its factorization.

723970426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50336.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 723970426 is about 26906.6985340082. The cubic root of 723970426 is about 897.9254381275.

The spelling of 723970426 in words is "seven hundred twenty-three million, nine hundred seventy thousand, four hundred twenty-six".