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230671986 = 23374125343
BaseRepresentation
bin11011011111111…
…00011001110010
3121002001100110220
431233330121302
5433023000421
634520033510
75500452036
oct1557743162
9532040426
10230671986
11109232306
1265302896
1338a360cc
14228c81c6
15153b73c6
hexdbfc672

230671986 has 32 divisors (see below), whose sum is σ = 485388288. Its totient is φ = 72984960.

The previous prime is 230671967. The next prime is 230671993. The reversal of 230671986 is 689176032.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3570 + ... + 21773.

It is an arithmetic number, because the mean of its divisors is an integer number (15168384).

Almost surely, 2230671986 is an apocalyptic number.

230671986 is an abundant number, since it is smaller than the sum of its proper divisors (254716302).

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

230671986 is a wasteful number, since it uses less digits than its factorization.

230671986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25426.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 230671986 is about 15187.8894517968. The cubic root of 230671986 is about 613.2886841972.

The spelling of 230671986 in words is "two hundred thirty million, six hundred seventy-one thousand, nine hundred eighty-six".

Divisors: 1 2 3 6 37 41 74 82 111 123 222 246 1517 3034 4551 9102 25343 50686 76029 152058 937691 1039063 1875382 2078126 2813073 3117189 5626146 6234378 38445331 76890662 115335993 230671986