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197220083 = 1017719379
BaseRepresentation
bin10111100000101…
…01011011110011
3111202002211002112
423300111123303
5400442020313
631323035535
74613225444
oct1360253363
9452084075
10197220083
11a1364405
125606bbab
1331b22b98
141c29b2cb
15124aa8a8
hexbc156f3

197220083 has 4 divisors (see below), whose sum is σ = 197249640. Its totient is φ = 197190528.

The previous prime is 197220073. The next prime is 197220091. The reversal of 197220083 is 380022791.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 380022791 = 894269919.

It is a cyclic number.

It is not a de Polignac number, because 197220083 - 212 = 197215987 is a prime.

It is a super-2 number, since 2×1972200832 = 77791522277053778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197220013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488 + ... + 19866.

It is an arithmetic number, because the mean of its divisors is an integer number (49312410).

Almost surely, 2197220083 is an apocalyptic number.

197220083 is a deficient number, since it is larger than the sum of its proper divisors (29557).

197220083 is a wasteful number, since it uses less digits than its factorization.

197220083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29556.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 197220083 is about 14043.5067913965. The cubic root of 197220083 is about 582.0813872397.

The spelling of 197220083 in words is "one hundred ninety-seven million, two hundred twenty thousand, eighty-three".

Divisors: 1 10177 19379 197220083