2978222 has 8 divisors (see below), whose sum is σ = 4811016. Its totient is φ = 1374552.

The previous prime is 2978219. The next prime is 2978233. The reversal of 2978222 is 2228792.

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

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 3 ways as a sum of consecutive naturals, for example, 57248 + ... + 57299.

It is an arithmetic number, because the mean of its divisors is an integer number (601377).

2^2978222 is an apocalyptic number.

2978222 is a deficient number, since it is larger than the sum of its proper divisors (1832794).

2978222 is a wasteful number, since it uses less digits than its factorization.

2978222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114562.

The product of its digits is 8064, while the sum is 32.

The square root of 2978222 is about 1725.7525894519. The cubic root of 2978222 is about 143.8751167785.

The spelling of 2978222 in words is "two million, nine hundred seventy-eight thousand, two hundred twenty-two".