382505881 has 8 divisors (see below), whose sum is σ = 396478080. Its totient is φ = 368776848.

The previous prime is 382505873. The next prime is 382505947. The reversal of 382505881 is 188505283.

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

It is a cyclic number.

It is not a de Polignac number, because 382505881 - 2³ = 382505873 is a prime.

It is a super-2 number, since 2×382505881² = 292621497999172322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (382505821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57586 + ... + 63883.

It is an arithmetic number, because the mean of its divisors is an integer number (49559760).

Almost surely, 2^382505881 is an apocalyptic number.

It is an amenable number.

382505881 is a deficient number, since it is larger than the sum of its proper divisors (13972199).

382505881 is a wasteful number, since it uses less digits than its factorization.

382505881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121583.

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 382505881 is about 19557.7575657333. The cubic root of 382505881 is about 725.9043054233.

The spelling of 382505881 in words is "three hundred eighty-two million, five hundred five thousand, eight hundred eighty-one".