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190923530 = 25729163577
BaseRepresentation
bin10110110000101…
…00001100001010
3111022020220211212
423120110030022
5342334023110
630540053122
74505552240
oct1330241412
9438226755
10190923530
1198853746
1253b341a2
1330729c05
141b4dc790
1511b64e05
hexb61430a

190923530 has 64 divisors (see below), whose sum is σ = 409501440. Its totient is φ = 62705664.

The previous prime is 190923527. The next prime is 190923539. The reversal of 190923530 is 35329091.

It is not an unprimeable number, because it can be changed into a prime (190923539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 330602 + ... + 331178.

It is an arithmetic number, because the mean of its divisors is an integer number (6398460).

Almost surely, 2190923530 is an apocalyptic number.

190923530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190923530 is an abundant number, since it is smaller than the sum of its proper divisors (218577910).

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

190923530 is a wasteful number, since it uses less digits than its factorization.

190923530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 190923530 is about 13817.5080966142. The cubic root of 190923530 is about 575.8196552332.

It can be divided in two parts, 19092 and 3530, that added together give a palindrome (22622).

The spelling of 190923530 in words is "one hundred ninety million, nine hundred twenty-three thousand, five hundred thirty".

Divisors: 1 2 5 7 10 14 29 35 58 70 145 163 203 290 326 406 577 815 1015 1141 1154 1630 2030 2282 2885 4039 4727 5705 5770 8078 9454 11410 16733 20195 23635 33089 33466 40390 47270 66178 83665 94051 117131 165445 167330 188102 234262 330890 470255 585655 658357 940510 1171310 1316714 2727479 3291785 5454958 6583570 13637395 19092353 27274790 38184706 95461765 190923530