220432145 has 8 divisors (see below), whose sum is σ = 265904640. Its totient is φ = 175421680.

The previous prime is 220432139. The next prime is 220432159. The reversal of 220432145 is 541234022.

It is a happy number.

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

It is not a de Polignac number, because 220432145 - 2²⁰ = 219383569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220432145.

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, 114455 + ... + 116364.

It is an arithmetic number, because the mean of its divisors is an integer number (33238080).

Almost surely, 2^220432145 is an apocalyptic number.

It is an amenable number.

220432145 is a deficient number, since it is larger than the sum of its proper divisors (45472495).

220432145 is a wasteful number, since it uses less digits than its factorization.

220432145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231015.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 220432145 is about 14846.9574324169. The cubic root of 220432145 is about 604.0760844829.

Adding to 220432145 its reverse (541234022), we get a palindrome (761666167).

The spelling of 220432145 in words is "two hundred twenty million, four hundred thirty-two thousand, one hundred forty-five".