100840284 has 18 divisors (see below), whose sum is σ = 254901920. Its totient is φ = 33613416.

The previous prime is 100840283. The next prime is 100840307. The reversal of 100840284 is 482048001.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100840283) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1400524 + ... + 1400595.

Almost surely, 2^100840284 is an apocalyptic number.

It is an amenable number.

100840284 is an abundant number, since it is smaller than the sum of its proper divisors (154061636).

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

100840284 is a wasteful number, since it uses less digits than its factorization.

100840284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801129 (or 2801124 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 100840284 is about 10041.9263092297. The cubic root of 100840284 is about 465.4553430763.

Adding to 100840284 its reverse (482048001), we get a palindrome (582888285).

It can be divided in two parts, 100840 and 284, that added together give a square (101124 = 318²).

The spelling of 100840284 in words is "one hundred million, eight hundred forty thousand, two hundred eighty-four".