261457832 has 16 divisors (see below), whose sum is σ = 490652640. Its totient is φ = 130617136.

The previous prime is 261457829. The next prime is 261457843. The reversal of 261457832 is 238754162.

It is a happy number.

It is a super-3 number, since 3×261457832³ (a number of 26 digits) contains 333 as substring.

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, 3578 + ... + 23145.

It is an arithmetic number, because the mean of its divisors is an integer number (30665790).

Almost surely, 2^261457832 is an apocalyptic number.

It is an amenable number.

261457832 is a deficient number, since it is larger than the sum of its proper divisors (229194808).

261457832 is a wasteful number, since it uses less digits than its factorization.

261457832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27952 (or 27948 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 261457832 is about 16169.6577576645. The cubic root of 261457832 is about 639.4411071297.

The spelling of 261457832 in words is "two hundred sixty-one million, four hundred fifty-seven thousand, eight hundred thirty-two".