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190071860 = 225112773119
BaseRepresentation
bin10110101010001…
…00010000110100
3111020122122120112
423111010100310
5342124244420
630505522152
74465404236
oct1325042064
9436578515
10190071860
1198321890
12537a3358
13304bc374
141b35a256
1511a478c5
hexb544434

190071860 has 48 divisors (see below), whose sum is σ = 437149440. Its totient is φ = 68845440.

The previous prime is 190071851. The next prime is 190071919. The reversal of 190071860 is 68170091.

It is a super-2 number, since 2×1900718602 = 72254623927719200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 59381 + ... + 62499.

It is an arithmetic number, because the mean of its divisors is an integer number (9107280).

Almost surely, 2190071860 is an apocalyptic number.

190071860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190071860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218574720).

190071860 is an abundant number, since it is smaller than the sum of its proper divisors (247077580).

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

190071860 is a wasteful number, since it uses less digits than its factorization.

190071860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416 (or 3414 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 190071860 is about 13786.6551418392. The cubic root of 190071860 is about 574.9621752056.

The spelling of 190071860 in words is "one hundred ninety million, seventy-one thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 277 554 1108 1385 2770 3047 3119 5540 6094 6238 12188 12476 15235 15595 30470 31190 34309 60940 62380 68618 137236 171545 343090 686180 863963 1727926 3455852 4319815 8639630 9503593 17279260 19007186 38014372 47517965 95035930 190071860