201134820 has 96 divisors (see below), whose sum is σ = 615638016. Its totient is φ = 48844800.

The previous prime is 201134819. The next prime is 201134827. The reversal of 201134820 is 28431102.

It is not an unprimeable number, because it can be changed into a prime (201134827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28440 + ... + 34800.

It is an arithmetic number, because the mean of its divisors is an integer number (6412896).

Almost surely, 2^201134820 is an apocalyptic number.

201134820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201134820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307819008).

201134820 is an abundant number, since it is smaller than the sum of its proper divisors (414503196).

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

201134820 is a wasteful number, since it uses less digits than its factorization.

201134820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6421 (or 6419 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 201134820 is about 14182.2008165165. The cubic root of 201134820 is about 585.9075401499.

Adding to 201134820 its reverse (28431102), we get a palindrome (229565922).

The spelling of 201134820 in words is "two hundred one million, one hundred thirty-four thousand, eight hundred twenty".