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188770054 = 21119835441
BaseRepresentation
bin10110100000001…
…10011100000110
3111011012111211111
423100012130012
5341311120204
630421555234
74451343004
oct1320063406
9434174744
10188770054
1197612810
1253275b1a
1330154975
141b0dba74
151188bd04
hexb406706

188770054 has 32 divisors (see below), whose sum is σ = 329132160. Its totient is φ = 80294400.

The previous prime is 188770033. The next prime is 188770061. The reversal of 188770054 is 450077881.

It is a junction number, because it is equal to n+sod(n) for n = 188769989 and 188770016.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 31974 + ... + 37414.

It is an arithmetic number, because the mean of its divisors is an integer number (10285380).

Almost surely, 2188770054 is an apocalyptic number.

188770054 is a deficient number, since it is larger than the sum of its proper divisors (140362106).

188770054 is a wasteful number, since it uses less digits than its factorization.

188770054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 188770054 is about 13739.3614844359. The cubic root of 188770054 is about 573.6465244701.

The spelling of 188770054 in words is "one hundred eighty-eight million, seven hundred seventy thousand, fifty-four".

Divisors: 1 2 11 19 22 38 83 166 209 418 913 1577 1826 3154 5441 10882 17347 34694 59851 103379 119702 206758 451603 903206 1137169 2274338 4967633 8580457 9935266 17160914 94385027 188770054