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230129212 = 22793372161
BaseRepresentation
bin11011011011101…
…11111000111100
3121001000202221011
431231313320330
5432403113322
634500245004
75463031435
oct1555677074
9531022834
10230129212
111089a1535
12650a0764
13388a6041
14227c648c
151530b677
hexdb77e3c

230129212 has 24 divisors (see below), whose sum is σ = 409223360. Its totient is φ = 113218560.

The previous prime is 230129209. The next prime is 230129243. The reversal of 230129212 is 212921032.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105412 + ... + 107572.

Almost surely, 2230129212 is an apocalyptic number.

It is an amenable number.

230129212 is a deficient number, since it is larger than the sum of its proper divisors (179094148).

230129212 is a wasteful number, since it uses less digits than its factorization.

230129212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581 (or 2579 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 230129212 is about 15170.0102834507. The cubic root of 230129212 is about 612.8072811627.

It can be divided in two parts, 2301 and 29212, that added together give a palindrome (31513).

The spelling of 230129212 in words is "two hundred thirty million, one hundred twenty-nine thousand, two hundred twelve".

Divisors: 1 2 4 79 158 316 337 674 1348 2161 4322 8644 26623 53246 106492 170719 341438 682876 728257 1456514 2913028 57532303 115064606 230129212