2921206 has 4 divisors (see below), whose sum is σ = 4381812. Its totient is φ = 1460602.

The previous prime is 2921203. The next prime is 2921213. The reversal of 2921206 is 6021292.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730300 + ... + 730303.

It is an arithmetic number, because the mean of its divisors is an integer number (1095453).

2^2921206 is an apocalyptic number.

2921206 is a deficient number, since it is larger than the sum of its proper divisors (1460606).

2921206 is a wasteful number, since it uses less digits than its factorization.

2921206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460605.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2921206 is about 1709.1535916939. The cubic root of 2921206 is about 142.9510648086.

Adding to 2921206 its reverse (6021292), we get a palindrome (8942498).

The spelling of 2921206 in words is "two million, nine hundred twenty-one thousand, two hundred six".