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191054214 = 23413831093
BaseRepresentation
bin10110110001101…
…00000110000110
3111022111120010000
423120310012012
5342402213324
630542542130
74506635241
oct1330640606
9438446100
10191054214
119893294a
1253b97946
1330774540
141b534258
1511b8d9c9
hexb634186

191054214 has 80 divisors (see below), whose sum is σ = 467015472. Its totient is φ = 58024512.

The previous prime is 191054189. The next prime is 191054231. The reversal of 191054214 is 412450191.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 174252 + ... + 175344.

Almost surely, 2191054214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191054214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233507736).

191054214 is an abundant number, since it is smaller than the sum of its proper divisors (275961258).

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

191054214 is a wasteful number, since it uses less digits than its factorization.

191054214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 191054214 is about 13822.2362156056. The cubic root of 191054214 is about 575.9510049471.

The spelling of 191054214 in words is "one hundred ninety-one million, fifty-four thousand, two hundred fourteen".

Divisors: 1 2 3 6 9 13 18 26 27 39 54 78 81 83 117 162 166 234 249 351 498 702 747 1053 1079 1093 1494 2106 2158 2186 2241 3237 3279 4482 6474 6558 6723 9711 9837 13446 14209 19422 19674 28418 29133 29511 42627 58266 59022 85254 87399 88533 90719 127881 174798 177066 181438 255762 272157 383643 544314 767286 816471 1150929 1179347 1632942 2301858 2358694 2449413 3538041 4898826 7076082 7348239 10614123 14696478 21228246 31842369 63684738 95527107 191054214