2978886 has 8 divisors (see below), whose sum is σ = 5957784. Its totient is φ = 992960.

The previous prime is 2978869. The next prime is 2978917. The reversal of 2978886 is 6888792.

It is a happy number.

2978886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2978886 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248235 + ... + 248246.

It is an arithmetic number, because the mean of its divisors is an integer number (744723).

2^2978886 is an apocalyptic number.

2978886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2978886 is a wasteful number, since it uses less digits than its factorization.

2978886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496486.

The product of its digits is 387072, while the sum is 48.

The square root of 2978886 is about 1725.9449585662. The cubic root of 2978886 is about 143.8858083901.

The spelling of 2978886 in words is "two million, nine hundred seventy-eight thousand, eight hundred eighty-six".