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230990942 = 27131967997
BaseRepresentation
bin11011100010010…
…10010001011110
3121002122120000002
431301022101132
5433113202232
634530534302
75503250660
oct1561122136
9532576002
10230990942
1110942aa06
1265437392
1338b18340
142296c530
151542bb62
hexdc4a45e

230990942 has 64 divisors (see below), whose sum is σ = 456046080. Its totient is φ = 85193856.

The previous prime is 230990941. The next prime is 230990953. The reversal of 230990942 is 249099032.

230990942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 230990896 and 230990905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230990941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231188 + ... + 232184.

It is an arithmetic number, because the mean of its divisors is an integer number (7125720).

Almost surely, 2230990942 is an apocalyptic number.

230990942 is a deficient number, since it is larger than the sum of its proper divisors (225055138).

230990942 is a wasteful number, since it uses less digits than its factorization.

230990942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 230990942 is about 15198.3861643268. The cubic root of 230990942 is about 613.5712239468.

The spelling of 230990942 in words is "two hundred thirty million, nine hundred ninety thousand, nine hundred forty-two".

Divisors: 1 2 7 13 14 19 26 38 67 91 133 134 182 247 266 469 494 871 938 997 1273 1729 1742 1994 2546 3458 6097 6979 8911 12194 12961 13958 16549 17822 18943 25922 33098 37886 66799 90727 115843 132601 133598 181454 231686 246259 265202 467593 492518 868387 935186 1269181 1723813 1736774 2538362 3447626 6078709 8884267 12157418 16499353 17768534 32998706 115495471 230990942