220423524 has 24 divisors (see below), whose sum is σ = 514832640. Its totient is φ = 73401504.

The previous prime is 220423523. The next prime is 220423537. The reversal of 220423524 is 425324022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 220423494 and 220423503.

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 7 ways as a sum of consecutive naturals, for example, 4237 + ... + 21419.

It is an arithmetic number, because the mean of its divisors is an integer number (21451360).

Almost surely, 2^220423524 is an apocalyptic number.

It is an amenable number.

220423524 is an abundant number, since it is smaller than the sum of its proper divisors (294409116).

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

220423524 is a wasteful number, since it uses less digits than its factorization.

220423524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18259 (or 18257 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 220423524 is about 14846.6671007334. The cubic root of 220423524 is about 604.0682093341.

Adding to 220423524 its reverse (425324022), we get a palindrome (645747546).

The spelling of 220423524 in words is "two hundred twenty million, four hundred twenty-three thousand, five hundred twenty-four".