7112890 has 16 divisors (see below), whose sum is σ = 12836232. Its totient is φ = 2837824.

The previous prime is 7112887. The next prime is 7112909. The reversal of 7112890 is 982117.

It is a Cunningham number, because it is equal to 2667²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 4669921 + 2442969 = 2161^2 + 1563^2 .

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 7 ways as a sum of consecutive naturals, for example, 4932 + ... + 6208.

Almost surely, 2^7112890 is an apocalyptic number.

7112890 is a deficient number, since it is larger than the sum of its proper divisors (5723342).

7112890 is a wasteful number, since it uses less digits than its factorization.

7112890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 7112890 is about 2667.0001874766. Note that the first 3 decimals coincide. The cubic root of 7112890 is about 192.3159763816.

The spelling of 7112890 in words is "seven million, one hundred twelve thousand, eight hundred ninety".