234388720544 has 72 divisors (see below), whose sum is σ = 507544686180. Its totient is φ = 106471439360.

The previous prime is 234388720537. The next prime is 234388720589. The reversal of 234388720544 is 445027883432.

It can be written as a sum of positive squares in 2 ways, for example, as 220535430544 + 13853290000 = 469612^2 + 117700^2 .

It is a junction number, because it is equal to n+sod(n) for n = 234388720492 and 234388720501.

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, 6226772 + ... + 6264300.

Almost surely, 2^234388720544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 234388720544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253772343090).

234388720544 is an abundant number, since it is smaller than the sum of its proper divisors (273155965636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234388720544 is a wasteful number, since it uses less digits than its factorization.

234388720544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39174 (or 39155 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 50.

The spelling of 234388720544 in words is "two hundred thirty-four billion, three hundred eighty-eight million, seven hundred twenty thousand, five hundred forty-four".