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197210972 = 22725792731
BaseRepresentation
bin10111100000100…
…11001101011100
3111202002100121002
423300103031130
5400441222342
631322525432
74613160050
oct1360231534
9452070532
10197210972
11a1358582
1256066878
1331b1b9aa
141c297c60
15124a7d32
hexbc1335c

197210972 has 24 divisors (see below), whose sum is σ = 394719360. Its totient is φ = 84455280.

The previous prime is 197210963. The next prime is 197210977. The reversal of 197210972 is 279012791.

197210972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197210977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70847 + ... + 73577.

It is an arithmetic number, because the mean of its divisors is an integer number (16446640).

Almost surely, 2197210972 is an apocalyptic number.

It is an amenable number.

197210972 is an abundant number, since it is smaller than the sum of its proper divisors (197508388).

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

197210972 is a wasteful number, since it uses less digits than its factorization.

197210972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321 (or 5319 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 197210972 is about 14043.1824028601. The cubic root of 197210972 is about 582.0724236070.

The spelling of 197210972 in words is "one hundred ninety-seven million, two hundred ten thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 2579 2731 5158 5462 10316 10924 18053 19117 36106 38234 72212 76468 7043249 14086498 28172996 49302743 98605486 197210972