12291190 has 24 divisors (see below), whose sum is σ = 22878720. Its totient is φ = 4754160.

The previous prime is 12291179. The next prime is 12291211. The reversal of 12291190 is 9119221.

It is a super-2 number, since 2×12291190² = 302146703232200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8971 + ... + 10249.

It is an arithmetic number, because the mean of its divisors is an integer number (953280).

Almost surely, 2^12291190 is an apocalyptic number.

12291190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12291190 is a deficient number, since it is larger than the sum of its proper divisors (10587530).

12291190 is a wasteful number, since it uses less digits than its factorization.

12291190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 12291190 is about 3505.8793476102. The cubic root of 12291190 is about 230.7798981679.

The spelling of 12291190 in words is "twelve million, two hundred ninety-one thousand, one hundred ninety".