204201270 has 128 divisors (see below), whose sum is σ = 670279680. Its totient is φ = 43079040.

The previous prime is 204201269. The next prime is 204201287. The reversal of 204201270 is 72102402.

It is a super-2 number, since 2×204201270² = 83396317339225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20415 + ... + 28725.

It is an arithmetic number, because the mean of its divisors is an integer number (5236560).

Almost surely, 2^204201270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204201270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335139840).

204201270 is an abundant number, since it is smaller than the sum of its proper divisors (466078410).

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

204201270 is a wasteful number, since it uses less digits than its factorization.

204201270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8347 (or 8341 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 204201270 is about 14289.9009793630. The cubic root of 204201270 is about 588.8700676052.

Adding to 204201270 its reverse (72102402), we get a palindrome (276303672).

The spelling of 204201270 in words is "two hundred four million, two hundred one thousand, two hundred seventy".