284140028 has 12 divisors (see below), whose sum is σ = 514391640. Its totient is φ = 137170992.

The previous prime is 284140027. The next prime is 284140037. The reversal of 284140028 is 820041482.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284140027) 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 3 ways as a sum of consecutive naturals, for example, 1224626 + ... + 1224857.

It is an arithmetic number, because the mean of its divisors is an integer number (42865970).

Almost surely, 2^284140028 is an apocalyptic number.

It is an amenable number.

284140028 is a deficient number, since it is larger than the sum of its proper divisors (230251612).

284140028 is a wasteful number, since it uses less digits than its factorization.

284140028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449516 (or 2449514 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 284140028 is about 16856.4536009209. The cubic root of 284140028 is about 657.4218583131.

The spelling of 284140028 in words is "two hundred eighty-four million, one hundred forty thousand, twenty-eight".