2942638 has 8 divisors (see below), whose sum is σ = 4421520. Its totient is φ = 1468800.

The previous prime is 2942629. The next prime is 2942657. The reversal of 2942638 is 8362492.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038 + ... + 2638.

It is an arithmetic number, because the mean of its divisors is an integer number (552690).

2^2942638 is an apocalyptic number.

2942638 is a deficient number, since it is larger than the sum of its proper divisors (1478882).

2942638 is a wasteful number, since it uses less digits than its factorization.

2942638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522.

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

The square root of 2942638 is about 1715.4119038878. The cubic root of 2942638 is about 143.2998094785.

The spelling of 2942638 in words is "two million, nine hundred forty-two thousand, six hundred thirty-eight".