2978829 has 16 divisors (see below), whose sum is σ = 5043840. Its totient is φ = 1702080.

The previous prime is 2978819. The next prime is 2978869. The reversal of 2978829 is 9288792.

2978829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2978829 - 2⁵ = 2978797 is a prime.

It is a super-2 number, since 2×2978829² = 17746844422482, which contains 22 as substring.

2978829 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978819) 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 15 ways as a sum of consecutive naturals, for example, 7692 + ... + 8069.

It is an arithmetic number, because the mean of its divisors is an integer number (315240).

2^2978829 is an apocalyptic number.

It is an amenable number.

2978829 is a deficient number, since it is larger than the sum of its proper divisors (2065011).

2978829 is a wasteful number, since it uses less digits than its factorization.

2978829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15777 (or 15771 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 2978829 is about 1725.9284457937. The cubic root of 2978829 is about 143.8848906484.

The spelling of 2978829 in words is "two million, nine hundred seventy-eight thousand, eight hundred twenty-nine".