201481856 has 64 divisors (see below), whose sum is σ = 415082880. Its totient is φ = 97363968.

The previous prime is 201481811. The next prime is 201481877. The reversal of 201481856 is 658184102.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643556 + ... + 643868.

It is an arithmetic number, because the mean of its divisors is an integer number (6485670).

Almost surely, 2^201481856 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 201481856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207541440).

201481856 is an abundant number, since it is smaller than the sum of its proper divisors (213601024).

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

201481856 is a wasteful number, since it uses less digits than its factorization.

201481856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 201481856 is about 14194.4304570490. The cubic root of 201481856 is about 586.2443195289.

The spelling of 201481856 in words is "two hundred one million, four hundred eighty-one thousand, eight hundred fifty-six".