20051622 has 48 divisors (see below), whose sum is σ = 44928000. Its totient is φ = 6460272.

The previous prime is 20051621. The next prime is 20051623. The reversal of 20051622 is 22615002.

It is an interprime number because it is at equal distance from previous prime (20051621) and next prime (20051623).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20051595 and 20051604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83779 + ... + 84017.

It is an arithmetic number, because the mean of its divisors is an integer number (936000).

Almost surely, 2^20051622 is an apocalyptic number.

20051622 is an abundant number, since it is smaller than the sum of its proper divisors (24876378).

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

20051622 is a wasteful number, since it uses less digits than its factorization.

20051622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20051622 is about 4477.9037506405. The cubic root of 20051622 is about 271.6751004612.

Adding to 20051622 its reverse (22615002), we get a palindrome (42666624).

The spelling of 20051622 in words is "twenty million, fifty-one thousand, six hundred twenty-two".