2978146 has 8 divisors (see below), whose sum is σ = 4476780. Its totient is φ = 1485888.

The previous prime is 2978119. The next prime is 2978147. The reversal of 2978146 is 6418792.

2978146 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 2927521 + 50625 = 1711^2 + 225^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978147) by changing a digit.

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, 171 + ... + 2446.

2^2978146 is an apocalyptic number.

2978146 is a deficient number, since it is larger than the sum of its proper divisors (1498634).

2978146 is a wasteful number, since it uses less digits than its factorization.

2978146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188.

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

The square root of 2978146 is about 1725.7305699326. The cubic root of 2978146 is about 143.8738929384.

The spelling of 2978146 in words is "two million, nine hundred seventy-eight thousand, one hundred forty-six".