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680230154 = 24761971223
BaseRepresentation
bin101000100010110…
…111110100001010
31202101222021100102
4220202313310022
52343114331104
6151255405402
722566601202
oct5042676412
91671867312
10680230154
11319a76a8a
1216b983862
13aac09966
14664ad402
153eab9a1e
hex288b7d0a

680230154 has 32 divisors (see below), whose sum is σ = 1070931456. Its totient is φ = 323781120.

The previous prime is 680230151. The next prime is 680230189. The reversal of 680230154 is 451032086.

It is not an unprimeable number, because it can be changed into a prime (680230151) 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, 555587 + ... + 556809.

It is an arithmetic number, because the mean of its divisors is an integer number (33466608).

Almost surely, 2680230154 is an apocalyptic number.

680230154 is a deficient number, since it is larger than the sum of its proper divisors (390701302).

680230154 is a wasteful number, since it uses less digits than its factorization.

680230154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 680230154 is about 26081.2222489668. Note that the first 4 decimals coincide. The cubic root of 680230154 is about 879.4651338227.

The spelling of 680230154 in words is "six hundred eighty million, two hundred thirty thousand, one hundred fifty-four".

Divisors: 1 2 47 61 94 97 122 194 1223 2446 2867 4559 5734 5917 9118 11834 57481 74603 114962 118631 149206 237262 278099 556198 3506341 5575657 7012682 7236491 11151314 14472982 340115077 680230154