201985888 has 24 divisors (see below), whose sum is σ = 428249808. Its totient is φ = 93224064.

The previous prime is 201985867. The next prime is 201985897. The reversal of 201985888 is 888589102.

It is a happy number.

It is a super-2 number, since 2×201985888² = 81596597902297088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242356 + ... + 243187.

It is an arithmetic number, because the mean of its divisors is an integer number (17843742).

Almost surely, 2^201985888 is an apocalyptic number.

It is an amenable number.

201985888 is an abundant number, since it is smaller than the sum of its proper divisors (226263920).

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

201985888 is a wasteful number, since it uses less digits than its factorization.

201985888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485566 (or 485558 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 49.

The square root of 201985888 is about 14212.1739364532. The cubic root of 201985888 is about 586.7327668864.

The spelling of 201985888 in words is "two hundred one million, nine hundred eighty-five thousand, eight hundred eighty-eight".