12022540 has 12 divisors (see below), whose sum is σ = 25247376. Its totient is φ = 4809008.

The previous prime is 12022531. The next prime is 12022561. The reversal of 12022540 is 4522021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300544 + ... + 300583.

It is an arithmetic number, because the mean of its divisors is an integer number (2103948).

Almost surely, 2^12022540 is an apocalyptic number.

12022540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12022540 is an abundant number, since it is smaller than the sum of its proper divisors (13224836).

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

12022540 is a wasteful number, since it uses less digits than its factorization.

12022540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601136 (or 601134 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12022540 is about 3467.3534576100. The cubic root of 12022540 is about 229.0861025164.

Adding to 12022540 its reverse (4522021), we get a palindrome (16544561).

The spelling of 12022540 in words is "twelve million, twenty-two thousand, five hundred forty".