2112860 has 24 divisors (see below), whose sum is σ = 4490640. Its totient is φ = 834944.

The previous prime is 2112841. The next prime is 2112863. The reversal of 2112860 is 682112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112863) 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, 1187 + ... + 2373.

It is an arithmetic number, because the mean of its divisors is an integer number (187110).

2^2112860 is an apocalyptic number.

2112860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

2112860 is the 1187-th pentagonal number.

It is an amenable number.

2112860 is an abundant number, since it is smaller than the sum of its proper divisors (2377780).

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

2112860 is a wasteful number, since it uses less digits than its factorization.

2112860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2112860 is about 1453.5680238640. The cubic root of 2112860 is about 128.3187854801.

Adding to 2112860 its reverse (682112), we get a palindrome (2794972).

The spelling of 2112860 in words is "two million, one hundred twelve thousand, eight hundred sixty".