82986281 has 8 divisors (see below), whose sum is σ = 99833280. Its totient is φ = 67387248.

The previous prime is 82986269. The next prime is 82986361. The reversal of 82986281 is 18268928.

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 82986281 - 2⁶ = 82986217 is a prime.

It is a super-2 number, since 2×82986281² = 13773445668421922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82986481) 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, 311846 + ... + 312111.

It is an arithmetic number, because the mean of its divisors is an integer number (12479160).

Almost surely, 2^82986281 is an apocalyptic number.

It is an amenable number.

82986281 is a deficient number, since it is larger than the sum of its proper divisors (16846999).

82986281 is a wasteful number, since it uses less digits than its factorization.

82986281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623983.

The product of its digits is 110592, while the sum is 44.

The square root of 82986281 is about 9109.6806200876. The cubic root of 82986281 is about 436.1830323885.

The spelling of 82986281 in words is "eighty-two million, nine hundred eighty-six thousand, two hundred eighty-one".