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190164100 = 2252721972
BaseRepresentation
bin10110101010110…
…10110010000100
3111020211100002211
423111122302010
5342140222400
630511513204
74466240200
oct1325326204
9436740084
10190164100
1198385115
1253828804
1330522349
141b381b00
1511a64dba
hexb55ac84

190164100 has 81 divisors (see below), whose sum is σ = 482477583. Its totient is φ = 64868160.

The previous prime is 190164077. The next prime is 190164131. The reversal of 190164100 is 1461091.

The square root of 190164100 is 13790.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 43850884 + 146313216 = 6622^2 + 12096^2 .

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 965202 + ... + 965398.

Almost surely, 2190164100 is an apocalyptic number.

190164100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190164100 is the 13790-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190164100

190164100 is an abundant number, since it is smaller than the sum of its proper divisors (292313483).

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

190164100 is a wasteful number, since it uses less digits than its factorization.

190164100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The cubic root of 190164100 is about 575.0551679897.

The spelling of 190164100 in words is "one hundred ninety million, one hundred sixty-four thousand, one hundred".

Divisors: 1 2 4 5 7 10 14 20 25 28 35 49 50 70 98 100 140 175 196 197 245 350 394 490 700 788 980 985 1225 1379 1970 2450 2758 3940 4900 4925 5516 6895 9653 9850 13790 19306 19700 27580 34475 38612 38809 48265 68950 77618 96530 137900 155236 193060 194045 241325 271663 388090 482650 543326 776180 965300 970225 1086652 1358315 1901641 1940450 2716630 3803282 3880900 5433260 6791575 7606564 9508205 13583150 19016410 27166300 38032820 47541025 95082050 190164100