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85189190 = 2561713807
BaseRepresentation
bin1010001001111…
…10001001000110
312221022001121012
411010332021012
5133302023230
612241522222
72053044662
oct504761106
9187261535
1085189190
11440a5999
1224643372
1314859308
14b4578a2
15772b395
hex513e246

85189190 has 16 divisors (see below), whose sum is σ = 153600192. Its totient is φ = 34017984.

The previous prime is 85189189. The next prime is 85189199. The reversal of 85189190 is 9198158.

It is a super-2 number, since 2×851891902 = 14514396185712200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85189199) 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, 734 + ... + 13073.

It is an arithmetic number, because the mean of its divisors is an integer number (9600012).

Almost surely, 285189190 is an apocalyptic number.

85189190 is a deficient number, since it is larger than the sum of its proper divisors (68411002).

85189190 is a wasteful number, since it uses less digits than its factorization.

85189190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14431.

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 85189190 is about 9229.7990227307. The cubic root of 85189190 is about 440.0089357689.

The spelling of 85189190 in words is "eighty-five million, one hundred eighty-nine thousand, one hundred ninety".

Divisors: 1 2 5 10 617 1234 3085 6170 13807 27614 69035 138070 8518919 17037838 42594595 85189190