220135407 has 16 divisors (see below), whose sum is σ = 296139648. Its totient is φ = 145450080.

The previous prime is 220135381. The next prime is 220135423. The reversal of 220135407 is 704531022.

It is not a de Polignac number, because 220135407 - 2¹⁴ = 220119023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220135457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271032 + ... + 271842.

It is an arithmetic number, because the mean of its divisors is an integer number (18508728).

Almost surely, 2^220135407 is an apocalyptic number.

220135407 is a deficient number, since it is larger than the sum of its proper divisors (76004241).

220135407 is a wasteful number, since it uses less digits than its factorization.

220135407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 220135407 is about 14836.9608410887. The cubic root of 220135407 is about 603.8049007682.

Adding to 220135407 its reverse (704531022), we get a palindrome (924666429).

The spelling of 220135407 in words is "two hundred twenty million, one hundred thirty-five thousand, four hundred seven".