220243534 has 24 divisors (see below), whose sum is σ = 406911600. Its totient is φ = 88837056.

The previous prime is 220243523. The next prime is 220243553. The reversal of 220243534 is 435342022.

It is a junction number, because it is equal to n+sod(n) for n = 220243499 and 220243508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64434 + ... + 67765.

It is an arithmetic number, because the mean of its divisors is an integer number (16954650).

Almost surely, 2^220243534 is an apocalyptic number.

220243534 is a deficient number, since it is larger than the sum of its proper divisors (186668066).

220243534 is a wasteful number, since it uses less digits than its factorization.

220243534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132232 (or 132225 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 220243534 is about 14840.6042329819. The cubic root of 220243534 is about 603.9037443647.

Adding to 220243534 its reverse (435342022), we get a palindrome (655585556).

The spelling of 220243534 in words is "two hundred twenty million, two hundred forty-three thousand, five hundred thirty-four".