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23200005 = 354335969
BaseRepresentation
bin101100010000…
…0000100000101
31121122200102110
41120200010011
521414400010
62145131233
7401124333
oct130400405
947580373
1023200005
1112106564
127929b19
134a63b1a
14311cb53
152084120
hex1620105

23200005 has 16 divisors (see below), whose sum is σ = 37984320. Its totient is φ = 12085248.

The previous prime is 23199989. The next prime is 23200027. The reversal of 23200005 is 50000232.

It is not a de Polignac number, because 23200005 - 24 = 23199989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17340 + ... + 18629.

It is an arithmetic number, because the mean of its divisors is an integer number (2374020).

Almost surely, 223200005 is an apocalyptic number.

It is an amenable number.

23200005 is a deficient number, since it is larger than the sum of its proper divisors (14784315).

23200005 is a wasteful number, since it uses less digits than its factorization.

23200005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36020.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 23200005 is about 4816.6383505511. The cubic root of 23200005 is about 285.2086499176.

Adding to 23200005 its reverse (50000232), we get a palindrome (73200237).

It can be divided in two parts, 23 and 200005, that added together give a triangular number (200028 = T632).

The spelling of 23200005 in words is "twenty-three million, two hundred thousand, five".

Divisors: 1 3 5 15 43 129 215 645 35969 107907 179845 539535 1546667 4640001 7733335 23200005