12840190 has 32 divisors (see below), whose sum is σ = 25461216. Its totient is φ = 4623360.

The previous prime is 12840133. The next prime is 12840193. The reversal of 12840190 is 9104821.

It is a happy number.

It is a super-2 number, since 2×12840190² = 329740958472200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11914 + ... + 12946.

It is an arithmetic number, because the mean of its divisors is an integer number (795663).

Almost surely, 2^12840190 is an apocalyptic number.

12840190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12840190 is a deficient number, since it is larger than the sum of its proper divisors (12621026).

12840190 is a wasteful number, since it uses less digits than its factorization.

12840190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12840190 is about 3583.3210852504. The cubic root of 12840190 is about 234.1659888336.

The spelling of 12840190 in words is "twelve million, eight hundred forty thousand, one hundred ninety".