2830978 has 8 divisors (see below), whose sum is σ = 4431168. Its totient is φ = 1353924.

The previous prime is 2830973. The next prime is 2830979. The reversal of 2830978 is 8790382.

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

It is not an unprimeable number, because it can be changed into a prime (2830973) 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, 30726 + ... + 30817.

It is an arithmetic number, because the mean of its divisors is an integer number (553896).

2^2830978 is an apocalyptic number.

2830978 is a deficient number, since it is larger than the sum of its proper divisors (1600190).

2830978 is a wasteful number, since it uses less digits than its factorization.

2830978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61568.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2830978 is about 1682.5510393447. The cubic root of 2830978 is about 141.4638580504.

The spelling of 2830978 in words is "two million, eight hundred thirty thousand, nine hundred seventy-eight".