220405135 has 8 divisors (see below), whose sum is σ = 270937296. Its totient is φ = 172023360.

The previous prime is 220405117. The next prime is 220405147. The reversal of 220405135 is 531504022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220405135 - 2⁷ = 220405007 is a prime.

It is a Duffinian number.

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, 537369 + ... + 537778.

It is an arithmetic number, because the mean of its divisors is an integer number (33867162).

Almost surely, 2^220405135 is an apocalyptic number.

220405135 is a deficient number, since it is larger than the sum of its proper divisors (50532161).

220405135 is a wasteful number, since it uses less digits than its factorization.

220405135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075193.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 220405135 is about 14846.0477905738. The cubic root of 220405135 is about 604.0514105838.

Adding to 220405135 its reverse (531504022), we get a palindrome (751909157).

The spelling of 220405135 in words is "two hundred twenty million, four hundred five thousand, one hundred thirty-five".