261510032 has 20 divisors (see below), whose sum is σ = 579058176. Its totient is φ = 112075680.

The previous prime is 261510019. The next prime is 261510061. The reversal of 261510032 is 230015162.

261510032 is digitally balanced in base 2, 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 = 261509986 and 261510013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167344 + ... + 1167567.

Almost surely, 2^261510032 is an apocalyptic number.

It is an amenable number.

261510032 is an abundant number, since it is smaller than the sum of its proper divisors (317548144).

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

261510032 is a wasteful number, since it uses less digits than its factorization.

261510032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334926 (or 2334920 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 261510032 is about 16171.2718114563. The cubic root of 261510032 is about 639.4836590579.

Adding to 261510032 its reverse (230015162), we get a palindrome (491525194).

The spelling of 261510032 in words is "two hundred sixty-one million, five hundred ten thousand, thirty-two".