201146856 has 64 divisors (see below), whose sum is σ = 537451200. Its totient is φ = 62512128.

The previous prime is 201146849. The next prime is 201146899. The reversal of 201146856 is 658641102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42211 + ... + 46733.

It is an arithmetic number, because the mean of its divisors is an integer number (8397675).

Almost surely, 2^201146856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201146856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268725600).

201146856 is an abundant number, since it is smaller than the sum of its proper divisors (336304344).

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

201146856 is a wasteful number, since it uses less digits than its factorization.

201146856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4658 (or 4654 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 201146856 is about 14182.6251448736. The cubic root of 201146856 is about 585.9192269089.

Adding to 201146856 its reverse (658641102), we get a palindrome (859787958).

The spelling of 201146856 in words is "two hundred one million, one hundred forty-six thousand, eight hundred fifty-six".