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190143070 = 251319233347
BaseRepresentation
bin10110101010101…
…01101001011110
3111020210021020221
423111111221132
5342134034240
630511231554
74466121655
oct1325255136
9436707227
10190143070
1198370337
12538185ba
13305158c0
141b37819c
1511a5da4a
hexb555a5e

190143070 has 64 divisors (see below), whose sum is σ = 404974080. Its totient is φ = 63600768.

The previous prime is 190143061. The next prime is 190143073. The reversal of 190143070 is 70341091.

190143070 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190143073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55137 + ... + 58483.

It is an arithmetic number, because the mean of its divisors is an integer number (6327720).

Almost surely, 2190143070 is an apocalyptic number.

190143070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190143070 is an abundant number, since it is smaller than the sum of its proper divisors (214831010).

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

190143070 is a wasteful number, since it uses less digits than its factorization.

190143070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 190143070 is about 13789.2374698531. The cubic root of 190143070 is about 575.0339690077.

The spelling of 190143070 in words is "one hundred ninety million, one hundred forty-three thousand, seventy".

Divisors: 1 2 5 10 13 19 23 26 38 46 65 95 115 130 190 230 247 299 437 494 598 874 1235 1495 2185 2470 2990 3347 4370 5681 6694 11362 16735 28405 33470 43511 56810 63593 76981 87022 127186 153962 217555 317965 384905 435110 635930 769810 826709 1000753 1462639 1653418 2001506 2925278 4133545 5003765 7313195 8267090 10007530 14626390 19014307 38028614 95071535 190143070