2112870 has 16 divisors (see below), whose sum is σ = 5070960. Its totient is φ = 563424.

The previous prime is 2112863. The next prime is 2112871. The reversal of 2112870 is 782112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35185 + ... + 35244.

It is an arithmetic number, because the mean of its divisors is an integer number (316935).

2^2112870 is an apocalyptic number.

2112870 is an abundant number, since it is smaller than the sum of its proper divisors (2958090).

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

2112870 is a wasteful number, since it uses less digits than its factorization.

2112870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70439.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2112870 is about 1453.5714636715. The cubic root of 2112870 is about 128.3189879207.

Adding to 2112870 its reverse (782112), we get a palindrome (2894982).

It can be divided in two parts, 211 and 2870, that added together give a triangular number (3081 = T₇₈).

The spelling of 2112870 in words is "two million, one hundred twelve thousand, eight hundred seventy".