7978168 has 32 divisors (see below), whose sum is σ = 17282160. Its totient is φ = 3412480.

The previous prime is 7978099. The next prime is 7978169. The reversal of 7978168 is 8618797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171 + ... + 4162.

Almost surely, 2^7978168 is an apocalyptic number.

It is an amenable number.

7978168 is an abundant number, since it is smaller than the sum of its proper divisors (9303992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7978168 is a wasteful number, since it uses less digits than its factorization.

7978168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5367 (or 5363 counting only the distinct ones).

The product of its digits is 169344, while the sum is 46.

The square root of 7978168 is about 2824.5650992675. The cubic root of 7978168 is about 199.8179009166.

The spelling of 7978168 in words is "seven million, nine hundred seventy-eight thousand, one hundred sixty-eight".