261612232 has 16 divisors (see below), whose sum is σ = 560597760. Its totient is φ = 112119504.

The previous prime is 261612203. The next prime is 261612233. The reversal of 261612232 is 232216162.

261612232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 261612197 and 261612206.

It is not an unprimeable number, because it can be changed into a prime (261612233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335768 + ... + 2335879.

It is an arithmetic number, because the mean of its divisors is an integer number (35037360).

Almost surely, 2^261612232 is an apocalyptic number.

It is an amenable number.

261612232 is an abundant number, since it is smaller than the sum of its proper divisors (298985528).

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

261612232 is a wasteful number, since it uses less digits than its factorization.

261612232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671660 (or 4671656 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 261612232 is about 16174.4314274104. The cubic root of 261612232 is about 639.5669531449.

Adding to 261612232 its reverse (232216162), we get a palindrome (493828394).

The spelling of 261612232 in words is "two hundred sixty-one million, six hundred twelve thousand, two hundred thirty-two".