20216622 has 32 divisors (see below), whose sum is σ = 41766912. Its totient is φ = 6519744.

The previous prime is 20216593. The next prime is 20216633. The reversal of 20216622 is 22661202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32458 + ... + 33074.

It is an arithmetic number, because the mean of its divisors is an integer number (1305216).

Almost surely, 2^20216622 is an apocalyptic number.

20216622 is an abundant number, since it is smaller than the sum of its proper divisors (21550290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20216622 is a wasteful number, since it uses less digits than its factorization.

20216622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20216622 is about 4496.2898038272. The cubic root of 20216622 is about 272.4182489106.

Adding to 20216622 its reverse (22661202), we get a palindrome (42877824).

The spelling of 20216622 in words is "twenty million, two hundred sixteen thousand, six hundred twenty-two".