7978012 has 24 divisors (see below), whose sum is σ = 16016000. Its totient is φ = 3406320.

The previous prime is 7977997. The next prime is 7978021. The reversal of 7978012 is 2108797.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13687 + ... + 14257.

Almost surely, 2^7978012 is an apocalyptic number.

It is an amenable number.

7978012 is an abundant number, since it is smaller than the sum of its proper divisors (8037988).

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

7978012 is a wasteful number, since it uses less digits than its factorization.

7978012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 7978012 is about 2824.5374842618. The cubic root of 7978012 is about 199.8165985376.

The spelling of 7978012 in words is "seven million, nine hundred seventy-eight thousand, twelve".