2102858 has 16 divisors (see below), whose sum is σ = 3278184. Its totient is φ = 1010880.

The previous prime is 2102857. The next prime is 2102873. The reversal of 2102858 is 8582012.

It can be written as a sum of positive squares in 4 ways, for example, as 1408969 + 693889 = 1187^2 + 833^2 .

It is a super-3 number, since 3×2102858³ = 27896588468333438136, which contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2102851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11528 + ... + 11708.

2^2102858 is an apocalyptic number.

2102858 is a deficient number, since it is larger than the sum of its proper divisors (1175326).

2102858 is a wasteful number, since it uses less digits than its factorization.

2102858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 2102858 is about 1450.1234430213. The cubic root of 2102858 is about 128.1159837399.

The spelling of 2102858 in words is "two million, one hundred two thousand, eight hundred fifty-eight".