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230744945 = 546148989
BaseRepresentation
bin11011100000011…
…10001101110001
3121002012001120002
431300032031301
5433032314240
634521355345
75501204534
oct1560161561
9532161502
10230744945
11109282102
1265338b55
1338a60392
1422906a1b
15153cdd15
hexdc0e371

230744945 has 4 divisors (see below), whose sum is σ = 276893940. Its totient is φ = 184595952.

The previous prime is 230744933. The next prime is 230744957. The reversal of 230744945 is 549447032.

230744945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (230744933) and next prime (230744957).

It can be written as a sum of positive squares in 2 ways, for example, as 139523344 + 91221601 = 11812^2 + 9551^2 .

It is a cyclic number.

It is not a de Polignac number, because 230744945 - 218 = 230482801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230744899 and 230744908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23074490 + ... + 23074499.

It is an arithmetic number, because the mean of its divisors is an integer number (69223485).

Almost surely, 2230744945 is an apocalyptic number.

It is an amenable number.

230744945 is a deficient number, since it is larger than the sum of its proper divisors (46148995).

230744945 is an equidigital number, since it uses as much as digits as its factorization.

230744945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46148994.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 230744945 is about 15190.2911427003. The cubic root of 230744945 is about 613.3533361926.

The spelling of 230744945 in words is "two hundred thirty million, seven hundred forty-four thousand, nine hundred forty-five".

Divisors: 1 5 46148989 230744945