220420236 has 48 divisors (see below), whose sum is σ = 531238400. Its totient is φ = 71088192.

The previous prime is 220420229. The next prime is 220420241. The reversal of 220420236 is 632024022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54285 + ... + 58203.

Almost surely, 2^220420236 is an apocalyptic number.

It is an amenable number.

220420236 is an abundant number, since it is smaller than the sum of its proper divisors (310818164).

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

220420236 is a wasteful number, since it uses less digits than its factorization.

220420236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078 (or 4076 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 220420236 is about 14846.5563683974. The cubic root of 220420236 is about 604.0652057434.

Adding to 220420236 its reverse (632024022), we get a palindrome (852444258).

The spelling of 220420236 in words is "two hundred twenty million, four hundred twenty thousand, two hundred thirty-six".