2978205 has 16 divisors (see below), whose sum is σ = 4786944. Its totient is φ = 1581120.

The previous prime is 2978197. The next prime is 2978219. The reversal of 2978205 is 5028792.

It is not a de Polignac number, because 2978205 - 2³ = 2978197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5235 + ... + 5775.

It is an arithmetic number, because the mean of its divisors is an integer number (299184).

2^2978205 is an apocalyptic number.

It is an amenable number.

2978205 is a deficient number, since it is larger than the sum of its proper divisors (1808739).

2978205 is a wasteful number, since it uses less digits than its factorization.

2978205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 2978205 is about 1725.7476640575. The cubic root of 2978205 is about 143.8748430266.

The spelling of 2978205 in words is "two million, nine hundred seventy-eight thousand, two hundred five".