220123424 has 24 divisors (see below), whose sum is σ = 443940588. Its totient is φ = 107376640.

The previous prime is 220123411. The next prime is 220123451. The reversal of 220123424 is 424321022.

It can be written as a sum of positive squares in 2 ways, for example, as 164352400 + 55771024 = 12820^2 + 7468^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220123396 and 220123405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82577 + ... + 85200.

Almost surely, 2^220123424 is an apocalyptic number.

It is an amenable number.

220123424 is an abundant number, since it is smaller than the sum of its proper divisors (223817164).

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

220123424 is a wasteful number, since it uses less digits than its factorization.

220123424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167828 (or 167820 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 220123424 is about 14836.5570130000. The cubic root of 220123424 is about 603.7939445943.

Adding to 220123424 its reverse (424321022), we get a palindrome (644444446).

The spelling of 220123424 in words is "two hundred twenty million, one hundred twenty-three thousand, four hundred twenty-four".