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190660194 = 23243313787
BaseRepresentation
bin10110101110100…
…11111001100010
3111021202112121200
423113103321202
5342302111234
630530302030
74503404424
oct1327237142
9437675550
10190660194
119869390a
1253a27916
13306670aa
141b470814
1511b11d99
hexb5d3e62

190660194 has 48 divisors (see below), whose sum is σ = 424593312. Its totient is φ = 61798464.

The previous prime is 190660189. The next prime is 190660207. The reversal of 190660194 is 491066091.

It is a super-2 number, since 2×1906601942 = 72702619152235272, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241869 + ... + 242655.

It is an arithmetic number, because the mean of its divisors is an integer number (8845694).

Almost surely, 2190660194 is an apocalyptic number.

190660194 is an abundant number, since it is smaller than the sum of its proper divisors (233933118).

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

190660194 is a wasteful number, since it uses less digits than its factorization.

190660194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 190660194 is about 13807.9757386809. The cubic root of 190660194 is about 575.5547955916.

The spelling of 190660194 in words is "one hundred ninety million, six hundred sixty thousand, one hundred ninety-four".

Divisors: 1 2 3 6 9 18 43 86 129 258 313 387 626 774 787 939 1574 1878 2361 2817 4722 5634 7083 13459 14166 26918 33841 40377 67682 80754 101523 121131 203046 242262 246331 304569 492662 609138 738993 1477986 2216979 4433958 10592233 21184466 31776699 63553398 95330097 190660194