261444234 has 16 divisors (see below), whose sum is σ = 524779488. Its totient is φ = 86832912.

The previous prime is 261444187. The next prime is 261444247. The reversal of 261444234 is 432444162.

261444234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 76992 + ... + 80315.

It is an arithmetic number, because the mean of its divisors is an integer number (32798718).

Almost surely, 2^261444234 is an apocalyptic number.

261444234 is an abundant number, since it is smaller than the sum of its proper divisors (263335254).

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

261444234 is a wasteful number, since it uses less digits than its factorization.

261444234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157589.

The product of its digits is 18432, while the sum is 30.

The square root of 261444234 is about 16169.2372732915. The cubic root of 261444234 is about 639.4300215041.

Adding to 261444234 its reverse (432444162), we get a palindrome (693888396).

The spelling of 261444234 in words is "two hundred sixty-one million, four hundred forty-four thousand, two hundred thirty-four".