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679930190 = 25438319051
BaseRepresentation
bin101000100001101…
…110100101001110
31202101102000212122
4220201232211032
52343030231230
6151245132542
722564211522
oct5041564516
91671360778
10679930190
11319891685
1216b85a152
13aab33274
1466431d82
153ea5abe5
hex2886e94e

679930190 has 32 divisors (see below), whose sum is σ = 1267491456. Its totient is φ = 262432800.

The previous prime is 679930177. The next prime is 679930193. The reversal of 679930190 is 91039976.

It is a happy number.

It is a super-2 number, since 2×6799301902 = 924610126546872200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679930193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26165 + ... + 45215.

It is an arithmetic number, because the mean of its divisors is an integer number (39609108).

Almost surely, 2679930190 is an apocalyptic number.

679930190 is a deficient number, since it is larger than the sum of its proper divisors (587561266).

679930190 is a wasteful number, since it uses less digits than its factorization.

679930190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19184.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 679930190 is about 26075.4710408077. The cubic root of 679930190 is about 879.3358409822.

The spelling of 679930190 in words is "six hundred seventy-nine million, nine hundred thirty thousand, one hundred ninety".

Divisors: 1 2 5 10 43 83 86 166 215 415 430 830 3569 7138 17845 19051 35690 38102 95255 190510 819193 1581233 1638386 3162466 4095965 7906165 8191930 15812330 67993019 135986038 339965095 679930190