2839642 has 16 divisors (see below), whose sum is σ = 4624200. Its totient is φ = 1300032.

The previous prime is 2839621. The next prime is 2839657. The reversal of 2839642 is 2469382.

2839642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2217121 + 622521 = 1489^2 + 789^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2839598 and 2839607.

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, 3508 + ... + 4240.

2^2839642 is an apocalyptic number.

2839642 is a deficient number, since it is larger than the sum of its proper divisors (1784558).

2839642 is a wasteful number, since it uses less digits than its factorization.

2839642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897.

The product of its digits is 20736, while the sum is 34.

The square root of 2839642 is about 1685.1237343293. The cubic root of 2839642 is about 141.6080243253.

It can be divided in two parts, 2839 and 642, that added together give a square (3481 = 59²).

The spelling of 2839642 in words is "two million, eight hundred thirty-nine thousand, six hundred forty-two".