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190110217 = 11107161521
BaseRepresentation
bin10110101010011…
…01101000001001
3111020201121012011
423111031220021
5342132011332
630510415521
74465624123
oct1325155011
9436647164
10190110217
1198348690
12538015a1
133050396b
141b36a213
1511a53e47
hexb54da09

190110217 has 8 divisors (see below), whose sum is σ = 209332512. Its totient is φ = 171211200.

The previous prime is 190110191. The next prime is 190110229. The reversal of 190110217 is 712011091.

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 190110217 - 215 = 190077449 is a prime.

It is a super-2 number, since 2×1901102172 = 72283789215574178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190110247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79584 + ... + 81937.

It is an arithmetic number, because the mean of its divisors is an integer number (26166564).

Almost surely, 2190110217 is an apocalyptic number.

It is an amenable number.

190110217 is a deficient number, since it is larger than the sum of its proper divisors (19222295).

190110217 is a wasteful number, since it uses less digits than its factorization.

190110217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161639.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 190110217 is about 13788.0461632532. The cubic root of 190110217 is about 575.0008488960. Note that the first 3 decimals are identical.

The spelling of 190110217 in words is "one hundred ninety million, one hundred ten thousand, two hundred seventeen".

Divisors: 1 11 107 1177 161521 1776731 17282747 190110217