2842978 has 8 divisors (see below), whose sum is σ = 4515372. Its totient is φ = 1337856.

The previous prime is 2842963. The next prime is 2842991. The reversal of 2842978 is 8792482.

It can be written as a sum of positive squares in 2 ways, for example, as 2634129 + 208849 = 1623^2 + 457^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2842978.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41775 + ... + 41842.

2^2842978 is an apocalyptic number.

2842978 is a deficient number, since it is larger than the sum of its proper divisors (1672394).

2842978 is a wasteful number, since it uses less digits than its factorization.

2842978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83636.

The product of its digits is 64512, while the sum is 40.

The square root of 2842978 is about 1686.1132820780. The cubic root of 2842978 is about 141.6634561364.

The spelling of 2842978 in words is "two million, eight hundred forty-two thousand, nine hundred seventy-eight".