9722890 has 32 divisors (see below), whose sum is σ = 18123264. Its totient is φ = 3753600.

The previous prime is 9722887. The next prime is 9722893. The reversal of 9722890 is 982279.

It is an interprime number because it is at equal distance from previous prime (9722887) and next prime (9722893).

It is not an unprimeable number, because it can be changed into a prime (9722893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64315 + ... + 64465.

It is an arithmetic number, because the mean of its divisors is an integer number (566352).

Almost surely, 2^9722890 is an apocalyptic number.

9722890 is a deficient number, since it is larger than the sum of its proper divisors (8400374).

9722890 is a wasteful number, since it uses less digits than its factorization.

9722890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 9722890 is about 3118.1549031438. The cubic root of 9722890 is about 213.4347472469.

The spelling of 9722890 in words is "nine million, seven hundred twenty-two thousand, eight hundred ninety".