215871282 has 48 divisors (see below), whose sum is σ = 521119872. Its totient is φ = 64020960.

The previous prime is 215871263. The next prime is 215871301. The reversal of 215871282 is 282178512.

It is an interprime number because it is at equal distance from previous prime (215871263) and next prime (215871301).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2293 + ... + 20904.

It is an arithmetic number, because the mean of its divisors is an integer number (10856664).

Almost surely, 2^215871282 is an apocalyptic number.

215871282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

215871282 is an abundant number, since it is smaller than the sum of its proper divisors (305248590).

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

215871282 is a wasteful number, since it uses less digits than its factorization.

215871282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23263 (or 23260 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 215871282 is about 14692.5587288260. The cubic root of 215871282 is about 599.8807929844.

It can be divided in two parts, 215871 and 282, that added together give a triangular number (216153 = T₆₅₇).

The spelling of 215871282 in words is "two hundred fifteen million, eight hundred seventy-one thousand, two hundred eighty-two".