261302632 has 16 divisors (see below), whose sum is σ = 511244640. Its totient is φ = 124970736.

The previous prime is 261302623. The next prime is 261302647. The reversal of 261302632 is 236203162.

It is a happy number.

261302632 is digitally balanced in base 2 and base 3, because in such bases 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 = 261302597 and 261302606.

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, 709878 + ... + 710245.

It is an arithmetic number, because the mean of its divisors is an integer number (31952790).

Almost surely, 2^261302632 is an apocalyptic number.

It is an amenable number.

261302632 is a deficient number, since it is larger than the sum of its proper divisors (249942008).

261302632 is a wasteful number, since it uses less digits than its factorization.

261302632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420152 (or 1420148 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 261302632 is about 16164.8579331833. The cubic root of 261302632 is about 639.3145591227.

Adding to 261302632 its reverse (236203162), we get a palindrome (497505794).

The spelling of 261302632 in words is "two hundred sixty-one million, three hundred two thousand, six hundred thirty-two".