8722978 has 16 divisors (see below), whose sum is σ = 14325696. Its totient is φ = 3950640.

The previous prime is 8722969. The next prime is 8722981. The reversal of 8722978 is 8792278.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7675 + ... + 8737.

It is an arithmetic number, because the mean of its divisors is an integer number (895356).

Almost surely, 2^8722978 is an apocalyptic number.

8722978 is a deficient number, since it is larger than the sum of its proper divisors (5602718).

8722978 is a wasteful number, since it uses less digits than its factorization.

8722978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449.

The product of its digits is 112896, while the sum is 43.

The square root of 8722978 is about 2953.4688080290. The cubic root of 8722978 is about 205.8519217351.

The spelling of 8722978 in words is "eight million, seven hundred twenty-two thousand, nine hundred seventy-eight".