720342256 has 10 divisors (see below), whose sum is σ = 1395663152. Its totient is φ = 360171120.

The previous prime is 720342247. The next prime is 720342263. The reversal of 720342256 is 652243027.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22510680 + ... + 22510711.

Almost surely, 2^720342256 is an apocalyptic number.

It is an amenable number.

720342256 is a deficient number, since it is larger than the sum of its proper divisors (675320896).

720342256 is a wasteful number, since it uses less digits than its factorization.

720342256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45021399 (or 45021393 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 720342256 is about 26839.1925362892. The cubic root of 720342256 is about 896.4229441907.

The spelling of 720342256 in words is "seven hundred twenty million, three hundred forty-two thousand, two hundred fifty-six".