220423736 has 32 divisors (see below), whose sum is σ = 445707360. Its totient is φ = 101592192.

The previous prime is 220423703. The next prime is 220423771. The reversal of 220423736 is 637324022.

It is a junction number, because it is equal to n+sod(n) for n = 220423699 and 220423708.

It is a congruent number.

It is an unprimeable number.

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, 126326 + ... + 128058.

It is an arithmetic number, because the mean of its divisors is an integer number (13928355).

Almost surely, 2^220423736 is an apocalyptic number.

220423736 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

220423736 is an abundant number, since it is smaller than the sum of its proper divisors (225283624).

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

220423736 is a wasteful number, since it uses less digits than its factorization.

220423736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 220423736 is about 14846.6742403812. The cubic root of 220423736 is about 604.0684029953.

Adding to 220423736 its reverse (637324022), we get a palindrome (857747758).

The spelling of 220423736 in words is "two hundred twenty million, four hundred twenty-three thousand, seven hundred thirty-six".