284490117 has 8 divisors (see below), whose sum is σ = 421466880. Its totient is φ = 189660060.

The previous prime is 284490091. The next prime is 284490119. The reversal of 284490117 is 711094482.

It is not a de Polignac number, because 284490117 - 2²⁰ = 283441541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284490119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5268309 + ... + 5268362.

It is an arithmetic number, because the mean of its divisors is an integer number (52683360).

Almost surely, 2^284490117 is an apocalyptic number.

284490117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

284490117 is a deficient number, since it is larger than the sum of its proper divisors (136976763).

284490117 is a wasteful number, since it uses less digits than its factorization.

284490117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10536680 (or 10536674 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 284490117 is about 16866.8348245899. The cubic root of 284490117 is about 657.6917507110.

The spelling of 284490117 in words is "two hundred eighty-four million, four hundred ninety thousand, one hundred seventeen".