8122978 has 4 divisors (see below), whose sum is σ = 12184470. Its totient is φ = 4061488.

The previous prime is 8122969. The next prime is 8123053. The reversal of 8122978 is 8792218.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7935489 + 187489 = 2817^2 + 433^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2030743 + ... + 2030746.

Almost surely, 2^8122978 is an apocalyptic number.

8122978 is a deficient number, since it is larger than the sum of its proper divisors (4061492).

8122978 is a wasteful number, since it uses less digits than its factorization.

8122978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061491.

The product of its digits is 16128, while the sum is 37.

The square root of 8122978 is about 2850.0838584154. The cubic root of 8122978 is about 201.0196098126.

The spelling of 8122978 in words is "eight million, one hundred twenty-two thousand, nine hundred seventy-eight".