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197081960 = 2354927049
BaseRepresentation
bin10111011111100…
…11101101101000
3111201211210121212
423233303231220
5400423110320
631320052252
74612111655
oct1357635550
9451753555
10197081960
11a127a659
1256004088
1331aa505a
141c262c2c
151247e9c5
hexbbf3b68

197081960 has 16 divisors (see below), whose sum is σ = 443434500. Its totient is φ = 78832768.

The previous prime is 197081953. The next prime is 197081971. The reversal of 197081960 is 69180791.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 195832036 + 1249924 = 13994^2 + 1118^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2463485 + ... + 2463564.

Almost surely, 2197081960 is an apocalyptic number.

197081960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197081960 is an abundant number, since it is smaller than the sum of its proper divisors (246352540).

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

197081960 is a wasteful number, since it uses less digits than its factorization.

197081960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927060 (or 4927056 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 197081960 is about 14038.5882481110. The cubic root of 197081960 is about 581.9454686885.

The spelling of 197081960 in words is "one hundred ninety-seven million, eighty-one thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 4927049 9854098 19708196 24635245 39416392 49270490 98540980 197081960