287085982 has 4 divisors (see below), whose sum is σ = 430628976. Its totient is φ = 143542990.

The previous prime is 287085979. The next prime is 287085983. The reversal of 287085982 is 289580782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289580782 = 2 ⋅144790391.

It is a super-2 number, since 2×287085982² = 164836722121808648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287085983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71771494 + ... + 71771497.

It is an arithmetic number, because the mean of its divisors is an integer number (107657244).

Almost surely, 2^287085982 is an apocalyptic number.

287085982 is a deficient number, since it is larger than the sum of its proper divisors (143542994).

287085982 is a wasteful number, since it uses less digits than its factorization.

287085982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143542993.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 287085982 is about 16943.6118345529. The cubic root of 287085982 is about 659.6860934550.

The spelling of 287085982 in words is "two hundred eighty-seven million, eighty-five thousand, nine hundred eighty-two".