2863978 has 16 divisors (see below), whose sum is σ = 4707360. Its totient is φ = 1298736.

The previous prime is 2863969. The next prime is 2863979. The reversal of 2863978 is 8793682.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2863979) 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 7 ways as a sum of consecutive naturals, for example, 601 + ... + 2467.

It is an arithmetic number, because the mean of its divisors is an integer number (294210).

2^2863978 is an apocalyptic number.

2863978 is a deficient number, since it is larger than the sum of its proper divisors (1843382).

2863978 is a wasteful number, since it uses less digits than its factorization.

2863978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941.

The product of its digits is 145152, while the sum is 43.

The square root of 2863978 is about 1692.3291641994. The cubic root of 2863978 is about 142.0114055508.

The spelling of 2863978 in words is "two million, eight hundred sixty-three thousand, nine hundred seventy-eight".