220432455 has 64 divisors (see below), whose sum is σ = 418521600. Its totient is φ = 109693440.

The previous prime is 220432439. The next prime is 220432481. The reversal of 220432455 is 554234022.

It is a happy number.

220432455 is a `hidden beast` number, since 2 + 204 + 3 + 2 + 455 = 666.

It is not a de Polignac number, because 220432455 - 2⁴ = 220432439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 318660 + ... + 319350.

It is an arithmetic number, because the mean of its divisors is an integer number (6539400).

Almost surely, 2^220432455 is an apocalyptic number.

220432455 is a deficient number, since it is larger than the sum of its proper divisors (198089145).

220432455 is a wasteful number, since it uses less digits than its factorization.

220432455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 220432455 is about 14846.9678722627. The cubic root of 220432455 is about 604.0763676593.

Adding to 220432455 its reverse (554234022), we get a palindrome (774666477).

The spelling of 220432455 in words is "two hundred twenty million, four hundred thirty-two thousand, four hundred fifty-five".