12146638 has 8 divisors (see below), whose sum is σ = 20822832. Its totient is φ = 5205696.

The previous prime is 12146627. The next prime is 12146639. The reversal of 12146638 is 83664121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433795 + ... + 433822.

It is an arithmetic number, because the mean of its divisors is an integer number (2602854).

Almost surely, 2^12146638 is an apocalyptic number.

12146638 is a deficient number, since it is larger than the sum of its proper divisors (8676194).

12146638 is an equidigital number, since it uses as much as digits as its factorization.

12146638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867626.

The product of its digits is 6912, while the sum is 31.

The square root of 12146638 is about 3485.2027200724. The cubic root of 12146638 is about 229.8716233808.

The spelling of 12146638 in words is "twelve million, one hundred forty-six thousand, six hundred thirty-eight".