220040400234 has 32 divisors (see below), whose sum is σ = 446312856384. Its totient is φ = 72309041280.

The previous prime is 220040400233. The next prime is 220040400247. The reversal of 220040400234 is 432004040022.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220040400234.

It is not an unprimeable number, because it can be changed into a prime (220040400233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855789 + ... + 1082799.

It is an arithmetic number, because the mean of its divisors is an integer number (13947276762).

Almost surely, 2^220040400234 is an apocalyptic number.

220040400234 is an abundant number, since it is smaller than the sum of its proper divisors (226272456150).

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

220040400234 is a wasteful number, since it uses less digits than its factorization.

220040400234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229302.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 220040400234 its reverse (432004040022), we get a palindrome (652044440256).

The spelling of 220040400234 in words is "two hundred twenty billion, forty million, four hundred thousand, two hundred thirty-four".