2978984 has 16 divisors (see below), whose sum is σ = 5663220. Its totient is φ = 1468800.

The previous prime is 2978977. The next prime is 2978999. The reversal of 2978984 is 4898792.

2978984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2630884 + 348100 = 1622^2 + 590^2 .

It is a super-4 number, since 4×2978984⁴ (a number of 27 digits) contains 4444 as substring.

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, 1967 + ... + 3134.

2^2978984 is an apocalyptic number.

It is an amenable number.

2978984 is a deficient number, since it is larger than the sum of its proper divisors (2684236).

2978984 is a wasteful number, since it uses less digits than its factorization.

2978984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5180 (or 5176 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 2978984 is about 1725.9733485775. The cubic root of 2978984 is about 143.8873862343.

The spelling of 2978984 in words is "two million, nine hundred seventy-eight thousand, nine hundred eighty-four".