2643938 has 16 divisors (see below), whose sum is σ = 4420224. Its totient is φ = 1175760.

The previous prime is 2643917. The next prime is 2643943. The reversal of 2643938 is 8393462.

It is a happy number.

2643938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2643898 and 2643907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (276264).

2^2643938 is an apocalyptic number.

2643938 is a deficient number, since it is larger than the sum of its proper divisors (1776286).

2643938 is a wasteful number, since it uses less digits than its factorization.

2643938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617.

The product of its digits is 31104, while the sum is 35.

The square root of 2643938 is about 1626.0190650789. The cubic root of 2643938 is about 138.2771507791.

The spelling of 2643938 in words is "two million, six hundred forty-three thousand, nine hundred thirty-eight".