284672871 has 48 divisors (see below), whose sum is σ = 501044544. Its totient is φ = 152036352.

The previous prime is 284672851. The next prime is 284672873. The reversal of 284672871 is 178276482.

It is not a de Polignac number, because 284672871 - 2⁶ = 284672807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284672873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 167301 + ... + 168993.

It is an arithmetic number, because the mean of its divisors is an integer number (10438428).

Almost surely, 2^284672871 is an apocalyptic number.

284672871 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

284672871 is a deficient number, since it is larger than the sum of its proper divisors (216371673).

284672871 is a wasteful number, since it uses less digits than its factorization.

284672871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1877 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 284672871 is about 16872.2515095052. The cubic root of 284672871 is about 657.8325524034.

The spelling of 284672871 in words is "two hundred eighty-four million, six hundred seventy-two thousand, eight hundred seventy-one".