20622252 has 48 divisors (see below), whose sum is σ = 55222272. Its totient is φ = 5867520.

The previous prime is 20622233. The next prime is 20622257. The reversal of 20622252 is 25222602.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20622257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31852 + ... + 32492.

It is an arithmetic number, because the mean of its divisors is an integer number (1150464).

Almost surely, 2^20622252 is an apocalyptic number.

It is an amenable number.

20622252 is an abundant number, since it is smaller than the sum of its proper divisors (34600020).

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

20622252 is a wasteful number, since it uses less digits than its factorization.

20622252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20622252 is about 4541.1729762254. The cubic root of 20622252 is about 274.2281474860.

Adding to 20622252 its reverse (25222602), we get a palindrome (45844854).

The spelling of 20622252 in words is "twenty million, six hundred twenty-two thousand, two hundred fifty-two".