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190130397 = 31719223449
BaseRepresentation
bin10110101010100…
…10100011011101
3111020202121212120
423111102203131
5342133133042
630511053153
74466040012
oct1325224335
9436677776
10190130397
1198361866
12538111b9
133050cbc2
141b373709
1511a59dec
hexb5528dd

190130397 has 48 divisors (see below), whose sum is σ = 296265600. Its totient is φ = 107864064.

The previous prime is 190130393. The next prime is 190130417. The reversal of 190130397 is 793031091.

It is not a de Polignac number, because 190130397 - 22 = 190130393 is a prime.

It is a super-2 number, since 2×1901303972 = 72299135726755218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190130393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 423229 + ... + 423677.

It is an arithmetic number, because the mean of its divisors is an integer number (6172200).

Almost surely, 2190130397 is an apocalyptic number.

190130397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

190130397 is a deficient number, since it is larger than the sum of its proper divisors (106135203).

190130397 is a wasteful number, since it uses less digits than its factorization.

190130397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 190130397 is about 13788.7779371487. Note that the first 3 decimals coincide. The cubic root of 190130397 is about 575.0211934217.

The spelling of 190130397 in words is "one hundred ninety million, one hundred thirty thousand, three hundred ninety-seven".

Divisors: 1 3 17 19 23 51 57 69 323 361 391 437 449 969 1083 1173 1311 1347 6137 7429 7633 8303 8531 10327 18411 22287 22899 24909 25593 30981 141151 145027 162089 175559 196213 423453 435081 486267 526677 588639 2755513 3335621 3728047 8266539 10006863 11184141 63376799 190130397