220442534 has 16 divisors (see below), whose sum is σ = 371583072. Its totient is φ = 97318848.

The previous prime is 220442501. The next prime is 220442561. The reversal of 220442534 is 435244022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 183719 + ... + 184914.

It is an arithmetic number, because the mean of its divisors is an integer number (23223942).

Almost surely, 2^220442534 is an apocalyptic number.

220442534 is a deficient number, since it is larger than the sum of its proper divisors (151140538).

220442534 is a wasteful number, since it uses less digits than its factorization.

220442534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368671.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 220442534 is about 14847.3072979581. The cubic root of 220442534 is about 604.0855743993.

Adding to 220442534 its reverse (435244022), we get a palindrome (655686556).

The spelling of 220442534 in words is "two hundred twenty million, four hundred forty-two thousand, five hundred thirty-four".