220204240 has 40 divisors (see below), whose sum is σ = 517062888. Its totient is φ = 87206400.

The previous prime is 220204223. The next prime is 220204267. The reversal of 220204240 is 42402022.

It can be written as a sum of positive squares in 4 ways, for example, as 74857104 + 145347136 = 8652^2 + 12056^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 5547 + ... + 21706.

Almost surely, 2^220204240 is an apocalyptic number.

220204240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220204240 is an abundant number, since it is smaller than the sum of its proper divisors (296858648).

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

220204240 is a wasteful number, since it uses less digits than its factorization.

220204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27367 (or 27361 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 220204240 is about 14839.2803059987. The cubic root of 220204240 is about 603.8678277520.

Adding to 220204240 its reverse (42402022), we get a palindrome (262606262).

The spelling of 220204240 in words is "two hundred twenty million, two hundred four thousand, two hundred forty".