2812906 has 4 divisors (see below), whose sum is σ = 4219362. Its totient is φ = 1406452.

The previous prime is 2812897. The next prime is 2812907. The reversal of 2812906 is 6092182.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1729225 + 1083681 = 1315^2 + 1041^2 .

It is not an unprimeable number, because it can be changed into a prime (2812907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703225 + ... + 703228.

2^2812906 is an apocalyptic number.

2812906 is a deficient number, since it is larger than the sum of its proper divisors (1406456).

2812906 is a wasteful number, since it uses less digits than its factorization.

2812906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406455.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2812906 is about 1677.1720245699. The cubic root of 2812906 is about 141.1621961943.

The spelling of 2812906 in words is "two million, eight hundred twelve thousand, nine hundred six".