12978602 has 32 divisors (see below), whose sum is σ = 24796800. Its totient is φ = 4955328.

The previous prime is 12978593. The next prime is 12978611. The reversal of 12978602 is 20687921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12978593) and next prime (12978611).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4049 + ... + 6507.

It is an arithmetic number, because the mean of its divisors is an integer number (774900).

Almost surely, 2^12978602 is an apocalyptic number.

12978602 is a deficient number, since it is larger than the sum of its proper divisors (11818198).

12978602 is a wasteful number, since it uses less digits than its factorization.

12978602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 12978602 is about 3602.5826846861. The cubic root of 12978602 is about 235.0043880273.

The spelling of 12978602 in words is "twelve million, nine hundred seventy-eight thousand, six hundred two".