261634382 has 8 divisors (see below), whose sum is σ = 392520576. Its totient is φ = 130794192.

The previous prime is 261634381. The next prime is 261634393. The reversal of 261634382 is 283436162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261634381) 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, 14258 + ... + 26954.

It is an arithmetic number, because the mean of its divisors is an integer number (49065072).

Almost surely, 2^261634382 is an apocalyptic number.

261634382 is a deficient number, since it is larger than the sum of its proper divisors (130886194).

261634382 is a wasteful number, since it uses less digits than its factorization.

261634382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23002.

The product of its digits is 41472, while the sum is 35.

The square root of 261634382 is about 16175.1161355954. The cubic root of 261634382 is about 639.5850027701.

The spelling of 261634382 in words is "two hundred sixty-one million, six hundred thirty-four thousand, three hundred eighty-two".