220404024 has 32 divisors (see below), whose sum is σ = 612234000. Its totient is φ = 73467936.

The previous prime is 220404013. The next prime is 220404053. The reversal of 220404024 is 420404022.

220404024 is a `hidden beast` number, since 220 + 40 + 402 + 4 = 666.

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 = 220403988 and 220404006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509979 + ... + 510410.

Almost surely, 2^220404024 is an apocalyptic number.

220404024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220404024 is an abundant number, since it is smaller than the sum of its proper divisors (391829976).

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

220404024 is a wasteful number, since it uses less digits than its factorization.

220404024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020404 (or 1020394 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 220404024 is about 14846.0103731609. The cubic root of 220404024 is about 604.0503956313.

Adding to 220404024 its reverse (420404022), we get a palindrome (640808046).

The spelling of 220404024 in words is "two hundred twenty million, four hundred four thousand, twenty-four".