978012 has 36 divisors (see below), whose sum is σ = 2826096. Its totient is φ = 279360.

The previous prime is 978011. The next prime is 978017. The reversal of 978012 is 210879.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1689 + ... + 2192.

2⁹⁷⁸⁰¹² is an apocalyptic number.

It is an amenable number.

978012 is an abundant number, since it is smaller than the sum of its proper divisors (1848084).

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

978012 is a wasteful number, since it uses less digits than its factorization.

978012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898 (or 3893 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 978012 is about 988.9448922968. The cubic root of 978012 is about 99.2616281554.

The spelling of 978012 in words is "nine hundred seventy-eight thousand, twelve".