2972806 has 4 divisors (see below), whose sum is σ = 4459212. Its totient is φ = 1486402.

The previous prime is 2972803. The next prime is 2972821. The reversal of 2972806 is 6082792.

2972806 is nontrivially palindromic in base 11.

2972806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972803) 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 as a sum of consecutive naturals, namely, 743200 + ... + 743203.

It is an arithmetic number, because the mean of its divisors is an integer number (1114803).

2^2972806 is an apocalyptic number.

2972806 is a deficient number, since it is larger than the sum of its proper divisors (1486406).

2972806 is a wasteful number, since it uses less digits than its factorization.

2972806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486405.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2972806 is about 1724.1827049359. The cubic root of 2972806 is about 143.7878498945.

The spelling of 2972806 in words is "two million, nine hundred seventy-two thousand, eight hundred six".