2821622 has 4 divisors (see below), whose sum is σ = 4232436. Its totient is φ = 1410810.

The previous prime is 2821607. The next prime is 2821627. The reversal of 2821622 is 2261282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2261282 = 2 ⋅1130641.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821627) 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 as a sum of consecutive naturals, namely, 705404 + ... + 705407.

It is an arithmetic number, because the mean of its divisors is an integer number (1058109).

2^2821622 is an apocalyptic number.

2821622 is a deficient number, since it is larger than the sum of its proper divisors (1410814).

2821622 is a wasteful number, since it uses less digits than its factorization.

2821622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410813.

The product of its digits is 768, while the sum is 23.

The square root of 2821622 is about 1679.7684364221. The cubic root of 2821622 is about 141.3078464089.

It can be divided in two parts, 2821 and 622, that added together give a palindrome (3443).

The spelling of 2821622 in words is "two million, eight hundred twenty-one thousand, six hundred twenty-two".