220420040 has 32 divisors (see below), whose sum is σ = 517510080. Its totient is φ = 84334272.

The previous prime is 220420003. The next prime is 220420043. The reversal of 220420040 is 40024022.

It is a happy number.

220420040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220419997 and 220420024.

It is not an unprimeable number, because it can be changed into a prime (220420043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118874 + ... + 120713.

It is an arithmetic number, because the mean of its divisors is an integer number (16172190).

Almost surely, 2^220420040 is an apocalyptic number.

220420040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220420040 is an abundant number, since it is smaller than the sum of its proper divisors (297090040).

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

220420040 is a wasteful number, since it uses less digits than its factorization.

220420040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239621 (or 239617 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 220420040 is about 14846.5497675386. The cubic root of 220420040 is about 604.0650266963.

Adding to 220420040 its reverse (40024022), we get a palindrome (260444062).

The spelling of 220420040 in words is "two hundred twenty million, four hundred twenty thousand, forty".