86991282 has 24 divisors (see below), whose sum is σ = 215407296. Its totient is φ = 24854616.

The previous prime is 86991269. The next prime is 86991293. The reversal of 86991282 is 28219968.

It is a super-3 number, since 3×86991282³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345078 + ... + 345329.

It is an arithmetic number, because the mean of its divisors is an integer number (8975304).

Almost surely, 2^86991282 is an apocalyptic number.

86991282 is an abundant number, since it is smaller than the sum of its proper divisors (128416014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86991282 is a wasteful number, since it uses less digits than its factorization.

86991282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690422 (or 690419 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 86991282 is about 9326.9117075268. The cubic root of 86991282 is about 443.0899609573.

The spelling of 86991282 in words is "eighty-six million, nine hundred ninety-one thousand, two hundred eighty-two".