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205304001 = 379776381
BaseRepresentation
bin11000011110010…
…11000011000001
3112022022112010220
430033023003001
5410024212001
632212213253
75042024640
oct1417130301
9468275126
10205304001
11a5985a31
125890a229
13336c3576
141d3a3357
1513055c36
hexc3cb0c1

205304001 has 8 divisors (see below), whose sum is σ = 312844224. Its totient is φ = 117316560.

The previous prime is 205303993. The next prime is 205304017. The reversal of 205304001 is 100403502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205304001 - 23 = 205303993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205324001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4888170 + ... + 4888211.

It is an arithmetic number, because the mean of its divisors is an integer number (39105528).

Almost surely, 2205304001 is an apocalyptic number.

205304001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

205304001 is a deficient number, since it is larger than the sum of its proper divisors (107540223).

205304001 is an equidigital number, since it uses as much as digits as its factorization.

205304001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776391.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 205304001 is about 14328.4333058433. The cubic root of 205304001 is about 589.9281737709.

Adding to 205304001 its reverse (100403502), we get a palindrome (305707503).

It can be divided in two parts, 20530 and 4001, that added together give a triangular number (24531 = T221).

The spelling of 205304001 in words is "two hundred five million, three hundred four thousand, one".

Divisors: 1 3 7 21 9776381 29329143 68434667 205304001