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197027285 = 5721361861
BaseRepresentation
bin10111011111001…
…10010111010101
3111201202000121212
423233212113111
5400414333120
631314551205
74611463400
oct1357462725
9451660555
10197027285
11a1242574
1255b98505
1331a861c0
141c24ad37
151246d6c5
hexbbe65d5

197027285 has 24 divisors (see below), whose sum is σ = 296195256. Its totient is φ = 124709760.

The previous prime is 197027279. The next prime is 197027287. The reversal of 197027285 is 582720791.

It can be written as a sum of positive squares in 4 ways, for example, as 1223236 + 195804049 = 1106^2 + 13993^2 .

It is not a de Polignac number, because 197027285 - 214 = 197010901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197027287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27746 + ... + 34115.

It is an arithmetic number, because the mean of its divisors is an integer number (12341469).

Almost surely, 2197027285 is an apocalyptic number.

It is an amenable number.

197027285 is a deficient number, since it is larger than the sum of its proper divisors (99167971).

197027285 is a wasteful number, since it uses less digits than its factorization.

197027285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61893 (or 61886 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 197027285 is about 14036.6408018443. The cubic root of 197027285 is about 581.8916487595.

The spelling of 197027285 in words is "one hundred ninety-seven million, twenty-seven thousand, two hundred eighty-five".

Divisors: 1 5 7 13 35 49 65 91 245 455 637 3185 61861 309305 433027 804193 2165135 3031189 4020965 5629351 15155945 28146755 39405457 197027285