2638343 has 4 divisors (see below), whose sum is σ = 2656200. Its totient is φ = 2620488.

The previous prime is 2638331. The next prime is 2638357. The reversal of 2638343 is 3438362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2638343 - 2⁴ = 2638327 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6⁵ + 3⁶ + 8³ + 3⁶ + 4 + 3¹² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638243) 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 3 ways as a sum of consecutive naturals, for example, 8705 + ... + 9002.

It is an arithmetic number, because the mean of its divisors is an integer number (664050).

2^2638343 is an apocalyptic number.

2638343 is a deficient number, since it is larger than the sum of its proper divisors (17857).

2638343 is a wasteful number, since it uses less digits than its factorization.

2638343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17856.

The product of its digits is 10368, while the sum is 29.

The square root of 2638343 is about 1624.2976943898. The cubic root of 2638343 is about 138.1795429644.

The spelling of 2638343 in words is "two million, six hundred thirty-eight thousand, three hundred forty-three".