12167890 has 16 divisors (see below), whose sum is σ = 25031232. Its totient is φ = 4171824.

The previous prime is 12167873. The next prime is 12167917. The reversal of 12167890 is 9876121.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

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, 86844 + ... + 86983.

It is an arithmetic number, because the mean of its divisors is an integer number (1564452).

Almost surely, 2^12167890 is an apocalyptic number.

12167890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12167890 is an abundant number, since it is smaller than the sum of its proper divisors (12863342).

12167890 is a wasteful number, since it uses less digits than its factorization.

12167890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173841.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 12167890 is about 3488.2502777180. The cubic root of 12167890 is about 230.0056079288.

The spelling of 12167890 in words is "twelve million, one hundred sixty-seven thousand, eight hundred ninety".