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197288136 = 2334304457
BaseRepresentation
bin10111100001001…
…10000011001000
3111202020021110000
423300212003020
5401001210021
631324323000
74613631033
oct1360460310
9452207400
10197288136
11a1400551
12560a3460
1331b47b56
141c2b801a
15124c0b26
hexbc260c8

197288136 has 40 divisors (see below), whose sum is σ = 552591270. Its totient is φ = 65762496.

The previous prime is 197288099. The next prime is 197288141. The reversal of 197288136 is 631882791.

It can be written as a sum of positive squares in only one way, i.e., 144144036 + 53144100 = 12006^2 + 7290^2 .

It is a junction number, because it is equal to n+sod(n) for n = 197288091 and 197288100.

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 9 ways as a sum of consecutive naturals, for example, 151581 + ... + 152876.

Almost surely, 2197288136 is an apocalyptic number.

It is an amenable number.

197288136 is an abundant number, since it is smaller than the sum of its proper divisors (355303134).

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

197288136 is a wasteful number, since it uses less digits than its factorization.

197288136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304475 (or 304462 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 197288136 is about 14045.9295171235. The cubic root of 197288136 is about 582.1483307759.

The spelling of 197288136 in words is "one hundred ninety-seven million, two hundred eighty-eight thousand, one hundred thirty-six".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 324 648 304457 608914 913371 1217828 1826742 2435656 2740113 3653484 5480226 7306968 8220339 10960452 16440678 21920904 24661017 32881356 49322034 65762712 98644068 197288136