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230661442 = 21110484611
BaseRepresentation
bin11011011111110…
…01110101000010
3121002000211000101
431233321311002
5433022131232
634515513014
75500406224
oct1557716502
9532024011
10230661442
111092253a0
12652b876a
1338a3137b
14228c4414
15153b41e7
hexdbf9d42

230661442 has 8 divisors (see below), whose sum is σ = 377446032. Its totient is φ = 104846100.

The previous prime is 230661439. The next prime is 230661467. The reversal of 230661442 is 244166032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 230661442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5242284 + ... + 5242327.

It is an arithmetic number, because the mean of its divisors is an integer number (47180754).

Almost surely, 2230661442 is an apocalyptic number.

230661442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

230661442 is a deficient number, since it is larger than the sum of its proper divisors (146784590).

230661442 is a wasteful number, since it uses less digits than its factorization.

230661442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10484624.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 230661442 is about 15187.5423291591. The cubic root of 230661442 is about 613.2793395942.

The spelling of 230661442 in words is "two hundred thirty million, six hundred sixty-one thousand, four hundred forty-two".

Divisors: 1 2 11 22 10484611 20969222 115330721 230661442