2106890 has 16 divisors (see below), whose sum is σ = 3857760. Its totient is φ = 828240.

The previous prime is 2106887. The next prime is 2106901. The reversal of 2106890 is 986012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1196 + ... + 2375.

It is an arithmetic number, because the mean of its divisors is an integer number (241110).

2^2106890 is an apocalyptic number.

2106890 is a deficient number, since it is larger than the sum of its proper divisors (1750870).

2106890 is a wasteful number, since it uses less digits than its factorization.

2106890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3637.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2106890 is about 1451.5130037309. The cubic root of 2106890 is about 128.1978142528.

The spelling of 2106890 in words is "two million, one hundred six thousand, eight hundred ninety".