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230645033 = 2973108949
BaseRepresentation
bin11011011111101…
…01110100101001
3121001222222111122
431233311310221
5433021120113
634515305025
75500310333
oct1557656451
9531888448
10230645033
11109214033
12652ab175
1338a26a68
14228bc453
15153ae408
hexdbf5d29

230645033 has 8 divisors (see below), whose sum is σ = 241869000. Its totient is φ = 219639168.

The previous prime is 230645017. The next prime is 230645057. The reversal of 230645033 is 330546032.

It can be written as a sum of positive squares in 4 ways, for example, as 121066009 + 109579024 = 11003^2 + 10468^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 230645033 - 24 = 230645017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230644993 and 230645011.

It is not an unprimeable number, because it can be changed into a prime (230645083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52358 + ... + 56591.

It is an arithmetic number, because the mean of its divisors is an integer number (30233625).

Almost surely, 2230645033 is an apocalyptic number.

It is an amenable number.

230645033 is a deficient number, since it is larger than the sum of its proper divisors (11223967).

230645033 is a wasteful number, since it uses less digits than its factorization.

230645033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109051.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 230645033 is about 15187.0021070651. The cubic root of 230645033 is about 613.2647965779.

Subtracting 230645033 from its reverse (330546032), we obtain a palindrome (99900999).

The spelling of 230645033 in words is "two hundred thirty million, six hundred forty-five thousand, thirty-three".

Divisors: 1 29 73 2117 108949 3159521 7953277 230645033