21862622 has 4 divisors (see below), whose sum is σ = 32793936. Its totient is φ = 10931310.

The previous prime is 21862613. The next prime is 21862637. The reversal of 21862622 is 22626812.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5465654 + ... + 5465657.

It is an arithmetic number, because the mean of its divisors is an integer number (8198484).

Almost surely, 2^21862622 is an apocalyptic number.

21862622 is a deficient number, since it is larger than the sum of its proper divisors (10931314).

21862622 is a wasteful number, since it uses less digits than its factorization.

21862622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10931313.

The product of its digits is 4608, while the sum is 29.

The square root of 21862622 is about 4675.7482823608. The cubic root of 21862622 is about 279.6194745895.

The spelling of 21862622 in words is "twenty-one million, eight hundred sixty-two thousand, six hundred twenty-two".