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204412211 = 1911070221
BaseRepresentation
bin11000010111100…
…01010100110011
3112020122012211122
430023301110303
5404312142321
632141132455
75031321653
oct1413612463
9466565748
10204412211
11a5426a13
125855a12b
1333470693
141d210363
1512e2b8ab
hexc2f1533

204412211 has 4 divisors (see below), whose sum is σ = 205482624. Its totient is φ = 203341800.

The previous prime is 204412181. The next prime is 204412217. The reversal of 204412211 is 112214402.

204412211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112214402 = 256107201.

It is a cyclic number.

It is not a de Polignac number, because 204412211 - 210 = 204411187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204412211.

It is not an unprimeable number, because it can be changed into a prime (204412217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534920 + ... + 535301.

It is an arithmetic number, because the mean of its divisors is an integer number (51370656).

Almost surely, 2204412211 is an apocalyptic number.

204412211 is a deficient number, since it is larger than the sum of its proper divisors (1070413).

204412211 is a wasteful number, since it uses less digits than its factorization.

204412211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070412.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 204412211 is about 14297.2798461805. The cubic root of 204412211 is about 589.0727664640.

Adding to 204412211 its reverse (112214402), we get a palindrome (316626613).

The spelling of 204412211 in words is "two hundred four million, four hundred twelve thousand, two hundred eleven".

Divisors: 1 191 1070221 204412211