12278196 has 96 divisors (see below), whose sum is σ = 36960000. Its totient is φ = 3452544.

The previous prime is 12278183. The next prime is 12278209. The reversal of 12278196 is 69187221.

It is an interprime number because it is at equal distance from previous prime (12278183) and next prime (12278209).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12278196.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82330 + ... + 82478.

It is an arithmetic number, because the mean of its divisors is an integer number (385000).

Almost surely, 2^12278196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12278196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18480000).

12278196 is an abundant number, since it is smaller than the sum of its proper divisors (24681804).

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

12278196 is a wasteful number, since it uses less digits than its factorization.

12278196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 270 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12278196 is about 3504.0256848374. The cubic root of 12278196 is about 230.6985441965.

The spelling of 12278196 in words is "twelve million, two hundred seventy-eight thousand, one hundred ninety-six".