284890203122 has 18 divisors (see below), whose sum is σ = 497113553997. Its totient is φ = 122093536824.

The previous prime is 284890203077. The next prime is 284890203127. The reversal of 284890203122 is 221302098482.

It can be written as a sum of positive squares in 2 ways, for example, as 219849392161 + 65040810961 = 468881^2 + 255031^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=377419.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 284890203122.

It is not an unprimeable number, because it can be changed into a prime (284890203127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5256908 + ... + 5310824.

Almost surely, 2^284890203122 is an apocalyptic number.

284890203122 is a deficient number, since it is larger than the sum of its proper divisors (212223350875).

284890203122 is an frugal number, since it uses more digits than its factorization.

284890203122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107850 (or 53926 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 284890203122 in words is "two hundred eighty-four billion, eight hundred ninety million, two hundred three thousand, one hundred twenty-two".