220135420 has 24 divisors (see below), whose sum is σ = 462697200. Its totient is φ = 87975552.

The previous prime is 220135381. The next prime is 220135423. The reversal of 220135420 is 24531022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220135423) 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, 21511 + ... + 30049.

It is an arithmetic number, because the mean of its divisors is an integer number (19279050).

Almost surely, 2^220135420 is an apocalyptic number.

220135420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220135420 is an abundant number, since it is smaller than the sum of its proper divisors (242561780).

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

220135420 is a wasteful number, since it uses less digits than its factorization.

220135420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9837 (or 9835 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220135420 is about 14836.9612791838. The cubic root of 220135420 is about 603.8049126540.

Adding to 220135420 its reverse (24531022), we get a palindrome (244666442).

The spelling of 220135420 in words is "two hundred twenty million, one hundred thirty-five thousand, four hundred twenty".