2173638 has 32 divisors (see below), whose sum is σ = 4780800. Its totient is φ = 655776.

The previous prime is 2173601. The next prime is 2173643. The reversal of 2173638 is 8363712.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 7⁵ + 3⁴ + 6² + 3¹⁰ + 8³ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2208 + ... + 3036.

It is an arithmetic number, because the mean of its divisors is an integer number (149400).

2^2173638 is an apocalyptic number.

2173638 is an abundant number, since it is smaller than the sum of its proper divisors (2607162).

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

2173638 is a wasteful number, since it uses less digits than its factorization.

2173638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876.

The product of its digits is 6048, while the sum is 30.

The square root of 2173638 is about 1474.3262868171. The cubic root of 2173638 is about 129.5375680473.

The spelling of 2173638 in words is "two million, one hundred seventy-three thousand, six hundred thirty-eight".