20223522 has 24 divisors (see below), whose sum is σ = 47801520. Its totient is φ = 6128280.

The previous prime is 20223517. The next prime is 20223551. The reversal of 20223522 is 22532202.

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 = 20223495 and 20223504.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50872 + ... + 51267.

It is an arithmetic number, because the mean of its divisors is an integer number (1991730).

Almost surely, 2^20223522 is an apocalyptic number.

20223522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20223522 is an abundant number, since it is smaller than the sum of its proper divisors (27577998).

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

20223522 is a wasteful number, since it uses less digits than its factorization.

20223522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102158 (or 102155 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20223522 is about 4497.0570376636. The cubic root of 20223522 is about 272.4492378020.

Adding to 20223522 its reverse (22532202), we get a palindrome (42755724).

The spelling of 20223522 in words is "twenty million, two hundred twenty-three thousand, five hundred twenty-two".