220403340 has 72 divisors (see below), whose sum is σ = 671601840. Its totient is φ = 58506624.

The previous prime is 220403329. The next prime is 220403353. The reversal of 220403340 is 43304022.

220403340 is a `hidden beast` number, since 220 + 403 + 3 + 40 = 666.

220403340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38547 + ... + 43893.

Almost surely, 2^220403340 is an apocalyptic number.

220403340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220403340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335800920).

220403340 is an abundant number, since it is smaller than the sum of its proper divisors (451198500).

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

220403340 is a wasteful number, since it uses less digits than its factorization.

220403340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591 (or 5586 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 220403340 is about 14845.9873366509. The cubic root of 220403340 is about 604.0497707624.

Adding to 220403340 its reverse (43304022), we get a palindrome (263707362).

The spelling of 220403340 in words is "two hundred twenty million, four hundred three thousand, three hundred forty".