2840938 has 8 divisors (see below), whose sum is σ = 4512132. Its totient is φ = 1336896.

The previous prime is 2840917. The next prime is 2840939. The reversal of 2840938 is 8390482.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 700569 = 1463^2 + 837^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 83557 = 2840938 / (2 + 8 + 4 + 0 + 9 + 3 + 8).

It is not an unprimeable number, because it can be changed into a prime (2840939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41745 + ... + 41812.

2^2840938 is an apocalyptic number.

2840938 is a deficient number, since it is larger than the sum of its proper divisors (1671194).

2840938 is a wasteful number, since it uses less digits than its factorization.

2840938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83576.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 2840938 is about 1685.5082319585. The cubic root of 2840938 is about 141.6295641399.

The spelling of 2840938 in words is "two million, eight hundred forty thousand, nine hundred thirty-eight".