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195213372 = 223194718217
BaseRepresentation
bin10111010001010…
…11100000111100
3111121022212101220
423220223200330
5344433311442
631212033340
74560200124
oct1350534074
9447285356
10195213372
11a0213772
1255462850
133159c693
141bcd7c84
1512210eec
hexba2b83c

195213372 has 48 divisors (see below), whose sum is σ = 489699840. Its totient is φ = 60331392.

The previous prime is 195213371. The next prime is 195213379. The reversal of 195213372 is 273312591.

195213372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1952133722 = 76216521215220768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195213371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1608 + ... + 19824.

It is an arithmetic number, because the mean of its divisors is an integer number (10202080).

Almost surely, 2195213372 is an apocalyptic number.

195213372 is a gapful number since it is divisible by the number (12) 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 195213372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244849920).

195213372 is an abundant number, since it is smaller than the sum of its proper divisors (294486468).

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

195213372 is a wasteful number, since it uses less digits than its factorization.

195213372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18290 (or 18288 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 195213372 is about 13971.8778981209. The cubic root of 195213372 is about 580.1004304884.

The spelling of 195213372 in words is "one hundred ninety-five million, two hundred thirteen thousand, three hundred seventy-two".

Divisors: 1 2 3 4 6 12 19 38 47 57 76 94 114 141 188 228 282 564 893 1786 2679 3572 5358 10716 18217 36434 54651 72868 109302 218604 346123 692246 856199 1038369 1384492 1712398 2076738 2568597 3424796 4153476 5137194 10274388 16267781 32535562 48803343 65071124 97606686 195213372