201284136 has 64 divisors (see below), whose sum is σ = 562651200. Its totient is φ = 66671424.

The previous prime is 201284123. The next prime is 201284173. The reversal of 201284136 is 631482102.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32350 + ... + 38066.

It is an arithmetic number, because the mean of its divisors is an integer number (8791425).

Almost surely, 2^201284136 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 201284136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281325600).

201284136 is an abundant number, since it is smaller than the sum of its proper divisors (361367064).

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

201284136 is a wasteful number, since it uses less digits than its factorization.

201284136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5895 (or 5885 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 201284136 is about 14187.4640440073. The cubic root of 201284136 is about 586.0524905708.

The spelling of 201284136 in words is "two hundred one million, two hundred eighty-four thousand, one hundred thirty-six".