12196440 has 128 divisors (see below), whose sum is σ = 42508800. Its totient is φ = 3104640.

The previous prime is 12196427. The next prime is 12196441. The reversal of 12196440 is 4469121.

12196440 is a `hidden beast` number, since 1 + 2 + 19 + 644 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12196441) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 24595 + ... + 25085.

It is an arithmetic number, because the mean of its divisors is an integer number (332100).

Almost surely, 2^12196440 is an apocalyptic number.

12196440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12196440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21254400).

12196440 is an abundant number, since it is smaller than the sum of its proper divisors (30312360).

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

12196440 is a wasteful number, since it uses less digits than its factorization.

12196440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12196440 is about 3492.3401896150. The cubic root of 12196440 is about 230.1853578257.

The spelling of 12196440 in words is "twelve million, one hundred ninety-six thousand, four hundred forty".