12194190 has 48 divisors (see below), whose sum is σ = 31943808. Its totient is φ = 3227328.

The previous prime is 12194183. The next prime is 12194207. The reversal of 12194190 is 9149121.

Added to its reverse (9149121) it gives a triangular number (21343311 = T₆₅₃₃).

It is a super-2 number, since 2×12194190² = 297396539512200, which contains 22 as substring.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 13699 + ... + 14561.

It is an arithmetic number, because the mean of its divisors is an integer number (665496).

Almost surely, 2^12194190 is an apocalyptic number.

12194190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12194190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15971904).

12194190 is an abundant number, since it is smaller than the sum of its proper divisors (19749618).

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

12194190 is a wasteful number, since it uses less digits than its factorization.

12194190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 12194190 is about 3492.0180411905. The cubic root of 12194190 is about 230.1712020855.

Adding to 12194190 its reverse (9149121), we get a triangular number (21343311 = T₆₅₃₃).

The spelling of 12194190 in words is "twelve million, one hundred ninety-four thousand, one hundred ninety".