202121984 has 36 divisors (see below), whose sum is σ = 416485440. Its totient is φ = 97797120.

The previous prime is 202121977. The next prime is 202122001. The reversal of 202121984 is 489121202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4799 + ... + 20670.

It is an arithmetic number, because the mean of its divisors is an integer number (11569040).

Almost surely, 2^202121984 is an apocalyptic number.

It is an amenable number.

202121984 is an abundant number, since it is smaller than the sum of its proper divisors (214363456).

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

202121984 is an equidigital number, since it uses as much as digits as its factorization.

202121984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25516 (or 25502 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 202121984 is about 14216.9611380210. The cubic root of 202121984 is about 586.8645154550.

The spelling of 202121984 in words is "two hundred two million, one hundred twenty-one thousand, nine hundred eighty-four".