220423522 has 24 divisors (see below), whose sum is σ = 382561200. Its totient is φ = 94917240.

The previous prime is 220423517. The next prime is 220423523. The reversal of 220423522 is 225324022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 220423493 and 220423502.

It is not an unprimeable number, because it can be changed into a prime (220423523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19372 + ... + 28567.

It is an arithmetic number, because the mean of its divisors is an integer number (15940050).

Almost surely, 2^220423522 is an apocalyptic number.

220423522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

220423522 is a deficient number, since it is larger than the sum of its proper divisors (162137678).

220423522 is a wasteful number, since it uses less digits than its factorization.

220423522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47982 (or 47971 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 220423522 is about 14846.6670333782. The cubic root of 220423522 is about 604.0682075071.

Adding to 220423522 its reverse (225324022), we get a palindrome (445747544).

The spelling of 220423522 in words is "two hundred twenty million, four hundred twenty-three thousand, five hundred twenty-two".