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23380015 = 517275059
BaseRepresentation
bin101100100110…
…0000000101111
31121222211100111
41121030000233
521441130030
62153040451
7402504211
oct131140057
947884314
1023380015
111221982a
1279b6127
134ac7a39
1431685b1
1520bc62a
hex164c02f

23380015 has 8 divisors (see below), whose sum is σ = 29706480. Its totient is φ = 17603712.

The previous prime is 23379997. The next prime is 23380057. The reversal of 23380015 is 51008332.

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

It is a cyclic number.

It is not a de Polignac number, because 23380015 - 213 = 23371823 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137445 + ... + 137614.

It is an arithmetic number, because the mean of its divisors is an integer number (3713310).

Almost surely, 223380015 is an apocalyptic number.

23380015 is a deficient number, since it is larger than the sum of its proper divisors (6326465).

23380015 is a wasteful number, since it uses less digits than its factorization.

23380015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275081.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 23380015 is about 4835.2885125916. The cubic root of 23380015 is about 285.9443996762.

Adding to 23380015 its reverse (51008332), we get a palindrome (74388347).

The spelling of 23380015 in words is "twenty-three million, three hundred eighty thousand, fifteen".

Divisors: 1 5 17 85 275059 1375295 4676003 23380015