2972906 has 8 divisors (see below), whose sum is σ = 4613220. Its totient is φ = 1435168.

The previous prime is 2972903. The next prime is 2972939. The reversal of 2972906 is 6092792.

It can be written as a sum of positive squares in 2 ways, for example, as 2805625 + 167281 = 1675^2 + 409^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2972903) by changing a digit.

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, 25571 + ... + 25686.

2^2972906 is an apocalyptic number.

2972906 is a deficient number, since it is larger than the sum of its proper divisors (1640314).

2972906 is a wasteful number, since it uses less digits than its factorization.

2972906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51288.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 2972906 is about 1724.2117039389. The cubic root of 2972906 is about 143.7894621338.

The spelling of 2972906 in words is "two million, nine hundred seventy-two thousand, nine hundred six".