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190116087 = 3731292037
BaseRepresentation
bin10110101010011…
…11000011110111
3111020201220020120
423111033003313
5342132203322
630510503023
74465650210
oct1325170367
9436656216
10190116087
1198352037
1253804a73
1330506535
141b36c407
1511a55a5c
hexb54f0f7

190116087 has 16 divisors (see below), whose sum is σ = 299046912. Its totient is φ = 105132960.

The previous prime is 190116067. The next prime is 190116119. The reversal of 190116087 is 780611091.

It is not a de Polignac number, because 190116087 - 28 = 190115831 is a prime.

It is a super-2 number, since 2×1901160872 = 72288253072383138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190116067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145368 + ... + 146669.

It is an arithmetic number, because the mean of its divisors is an integer number (18690432).

Almost surely, 2190116087 is an apocalyptic number.

190116087 is a deficient number, since it is larger than the sum of its proper divisors (108930825).

190116087 is a wasteful number, since it uses less digits than its factorization.

190116087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292078.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 190116087 is about 13788.2590271579. The cubic root of 190116087 is about 575.0067669021.

The spelling of 190116087 in words is "one hundred ninety million, one hundred sixteen thousand, eighty-seven".

Divisors: 1 3 7 21 31 93 217 651 292037 876111 2044259 6132777 9053147 27159441 63372029 190116087