2100638 has 8 divisors (see below), whose sum is σ = 3236232. Its totient is φ = 1021896.

The previous prime is 2100629. The next prime is 2100649. The reversal of 2100638 is 8360012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2 + 1 + 0 + 0 + 6⁴ + 3⁷ + 8⁷ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14120 + ... + 14267.

It is an arithmetic number, because the mean of its divisors is an integer number (404529).

2^2100638 is an apocalyptic number.

2100638 is a deficient number, since it is larger than the sum of its proper divisors (1135594).

2100638 is a wasteful number, since it uses less digits than its factorization.

2100638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28426.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2100638 is about 1449.3577888154. The cubic root of 2100638 is about 128.0708835905.

The spelling of 2100638 in words is "two million, one hundred thousand, six hundred thirty-eight".