7881112 has 16 divisors (see below), whose sum is σ = 14895360. Its totient is φ = 3909024.

The previous prime is 7881089. The next prime is 7881113. The reversal of 7881112 is 2111887.

It is a super-2 number, since 2×7881112² = 124223852713088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2863 + ... + 4894.

It is an arithmetic number, because the mean of its divisors is an integer number (930960).

Almost surely, 2^7881112 is an apocalyptic number.

It is an amenable number.

7881112 is a deficient number, since it is larger than the sum of its proper divisors (7014248).

7881112 is a wasteful number, since it uses less digits than its factorization.

7881112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7890 (or 7886 counting only the distinct ones).

The product of its digits is 896, while the sum is 28.

The square root of 7881112 is about 2807.3318293355. The cubic root of 7881112 is about 199.0043179791.

Adding to 7881112 its reverse (2111887), we get a palindrome (9992999).

The spelling of 7881112 in words is "seven million, eight hundred eighty-one thousand, one hundred twelve".