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23204005 = 511421891
BaseRepresentation
bin101100010000…
…1000010100101
31121122212220121
41120201002211
521420012010
62145201541
7401142106
oct130410245
947585817
1023204005
1112109570
1279302b1
134a658a6
1431203ad
1520853da
hex16210a5

23204005 has 8 divisors (see below), whose sum is σ = 30376224. Its totient is φ = 16875600.

The previous prime is 23204003. The next prime is 23204011. The reversal of 23204005 is 50040232.

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

It is not a de Polignac number, because 23204005 - 21 = 23204003 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 23204005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23204003) 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, 210891 + ... + 211000.

It is an arithmetic number, because the mean of its divisors is an integer number (3797028).

Almost surely, 223204005 is an apocalyptic number.

It is an amenable number.

23204005 is a deficient number, since it is larger than the sum of its proper divisors (7172219).

23204005 is a wasteful number, since it uses less digits than its factorization.

23204005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421907.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 23204005 is about 4817.0535600095. The cubic root of 23204005 is about 285.2250402739.

Adding to 23204005 its reverse (50040232), we get a palindrome (73244237).

The spelling of 23204005 in words is "twenty-three million, two hundred four thousand, five".

Divisors: 1 5 11 55 421891 2109455 4640801 23204005