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189015006 = 23178917609
BaseRepresentation
bin10110100010000…
…10001111011110
3111011122221211210
423101002033132
5341341440011
630431125250
74453413105
oct1321021736
9434587753
10189015006
119776a854
1253373826
133020c2cb
141b16303c
15118d96a6
hexb4423de

189015006 has 16 divisors (see below), whose sum is σ = 378262800. Its totient is φ = 62966208.

The previous prime is 189014957. The next prime is 189015007. The reversal of 189015006 is 600510981.

It is a happy number.

189015006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189015007) 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, 1930 + ... + 19538.

It is an arithmetic number, because the mean of its divisors is an integer number (23641425).

Almost surely, 2189015006 is an apocalyptic number.

189015006 is an abundant number, since it is smaller than the sum of its proper divisors (189247794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189015006 is a wasteful number, since it uses less digits than its factorization.

189015006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19403.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 189015006 is about 13748.2728369785. The cubic root of 189015006 is about 573.8945424961.

Adding to 189015006 its reverse (600510981), we get a palindrome (789525987).

The spelling of 189015006 in words is "one hundred eighty-nine million, fifteen thousand, six".

Divisors: 1 2 3 6 1789 3578 5367 10734 17609 35218 52827 105654 31502501 63005002 94507503 189015006