9720418 has 8 divisors (see below), whose sum is σ = 14974812. Its totient is φ = 4728816.

The previous prime is 9720407. The next prime is 9720433. The reversal of 9720418 is 8140279.

It can be written as a sum of positive squares in 2 ways, for example, as 9628609 + 91809 = 3103^2 + 303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9720418.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65605 + ... + 65752.

Almost surely, 2^9720418 is an apocalyptic number.

9720418 is a deficient number, since it is larger than the sum of its proper divisors (5254394).

9720418 is a wasteful number, since it uses less digits than its factorization.

9720418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131396.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 9720418 is about 3117.7584896845. The cubic root of 9720418 is about 213.4166574465.

The spelling of 9720418 in words is "nine million, seven hundred twenty thousand, four hundred eighteen".