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189007 = 7133167
BaseRepresentation
bin101110001001001111
3100121021021
4232021033
522022012
64015011
71415020
oct561117
9317237
10189007
1111a005
1291467
1368050
144cc47
153b007
hex2e24f

189007 has 16 divisors (see below), whose sum is σ = 243712. Its totient is φ = 142560.

The previous prime is 188999. The next prime is 189011. The reversal of 189007 is 700981.

It is a cyclic number.

It is not a de Polignac number, because 189007 - 23 = 188999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2788 + ... + 2854.

It is an arithmetic number, because the mean of its divisors is an integer number (15232).

2189007 is an apocalyptic number.

189007 is a deficient number, since it is larger than the sum of its proper divisors (54705).

189007 is a wasteful number, since it uses less digits than its factorization.

189007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 189007 is about 434.7493530760. The cubic root of 189007 is about 57.3886439675.

Adding to 189007 its reverse (700981), we get a palindrome (889988).

It can be divided in two parts, 18 and 9007, that added together give a square (9025 = 952).

The spelling of 189007 in words is "one hundred eighty-nine thousand, seven".

Divisors: 1 7 13 31 67 91 217 403 469 871 2077 2821 6097 14539 27001 189007