12150978 has 16 divisors (see below), whose sum is σ = 27773760. Its totient is φ = 3471696.

The previous prime is 12150967. The next prime is 12150989. The reversal of 12150978 is 87905121.

It is an interprime number because it is at equal distance from previous prime (12150967) and next prime (12150989).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144613 + ... + 144696.

It is an arithmetic number, because the mean of its divisors is an integer number (1735860).

Almost surely, 2^12150978 is an apocalyptic number.

12150978 is an abundant number, since it is smaller than the sum of its proper divisors (15622782).

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

12150978 is a wasteful number, since it uses less digits than its factorization.

12150978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289321.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12150978 is about 3485.8252968271. The cubic root of 12150978 is about 229.8989978705.

The spelling of 12150978 in words is "twelve million, one hundred fifty thousand, nine hundred seventy-eight".