720404026 has 8 divisors (see below), whose sum is σ = 1105736544. Its totient is φ = 351825180.

The previous prime is 720404021. The next prime is 720404029. The reversal of 720404026 is 620404027.

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 (720404021) 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, 4188310 + ... + 4188481.

It is an arithmetic number, because the mean of its divisors is an integer number (138217068).

Almost surely, 2^720404026 is an apocalyptic number.

720404026 is a deficient number, since it is larger than the sum of its proper divisors (385332518).

720404026 is a wasteful number, since it uses less digits than its factorization.

720404026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8376836.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 720404026 is about 26840.3432541389. The cubic root of 720404026 is about 896.4485664844.

Subtracting from 720404026 its reverse (620404027), we obtain a palindrome (99999999).

The spelling of 720404026 in words is "seven hundred twenty million, four hundred four thousand, twenty-six".