261732244 has 12 divisors (see below), whose sum is σ = 458374644. Its totient is φ = 130768064.

The previous prime is 261732241. The next prime is 261732257. The reversal of 261732244 is 442237162.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 236852100 + 24880144 = 15390^2 + 4988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261732241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18337 + ... + 29320.

It is an arithmetic number, because the mean of its divisors is an integer number (38197887).

Almost surely, 2^261732244 is an apocalyptic number.

It is an amenable number.

261732244 is a deficient number, since it is larger than the sum of its proper divisors (196642400).

261732244 is a wasteful number, since it uses less digits than its factorization.

261732244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49034 (or 49032 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 261732244 is about 16178.1409315162. The cubic root of 261732244 is about 639.6647365125.

The spelling of 261732244 in words is "two hundred sixty-one million, seven hundred thirty-two thousand, two hundred forty-four".