2163642 has 16 divisors (see below), whose sum is σ = 4660320. Its totient is φ = 665712.

The previous prime is 2163613. The next prime is 2163653. The reversal of 2163642 is 2463612.

It is a d-powerful number, because it can be written as 2 + 1 + 6 + 3⁶ + 6³ + 4⁸ + 2²¹ .

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, 13792 + ... + 13947.

It is an arithmetic number, because the mean of its divisors is an integer number (291270).

2^2163642 is an apocalyptic number.

2163642 is an abundant number, since it is smaller than the sum of its proper divisors (2496678).

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

2163642 is a wasteful number, since it uses less digits than its factorization.

2163642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27757.

The product of its digits is 1728, while the sum is 24.

The square root of 2163642 is about 1470.9323573843. The cubic root of 2163642 is about 129.3386929322.

The spelling of 2163642 in words is "two million, one hundred sixty-three thousand, six hundred forty-two".