2840398 has 32 divisors (see below), whose sum is σ = 4935168. Its totient is φ = 1214400.

The previous prime is 2840393. The next prime is 2840417. The reversal of 2840398 is 8930482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840393) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 42361 + ... + 42427.

It is an arithmetic number, because the mean of its divisors is an integer number (154224).

2^2840398 is an apocalyptic number.

2840398 is a deficient number, since it is larger than the sum of its proper divisors (2094770).

2840398 is a wasteful number, since it uses less digits than its factorization.

2840398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168.

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

The square root of 2840398 is about 1685.3480352734. The cubic root of 2840398 is about 141.6205900134.

The spelling of 2840398 in words is "two million, eight hundred forty thousand, three hundred ninety-eight".