12308978 has 16 divisors (see below), whose sum is σ = 20234880. Its totient is φ = 5569200.

The previous prime is 12308951. The next prime is 12308981. The reversal of 12308978 is 87980321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4088 + ... + 6428.

It is an arithmetic number, because the mean of its divisors is an integer number (1264680).

Almost surely, 2^12308978 is an apocalyptic number.

12308978 is a deficient number, since it is larger than the sum of its proper divisors (7925902).

12308978 is a wasteful number, since it uses less digits than its factorization.

12308978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 12308978 is about 3508.4153117896. The cubic root of 12308978 is about 230.8911739161.

The spelling of 12308978 in words is "twelve million, three hundred eight thousand, nine hundred seventy-eight".