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230471747 = 1120951977
BaseRepresentation
bin11011011110010…
…11100001000011
3121001200011210122
431233023201003
5433000043442
634511450455
75465656202
oct1557134103
9531604718
10230471747
11109105920
1265226a2b
1338995c1c
1422875239
1515377dd2
hexdbcb843

230471747 has 4 divisors (see below), whose sum is σ = 251423736. Its totient is φ = 209519760.

The previous prime is 230471711. The next prime is 230471777. The reversal of 230471747 is 747174032.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 230471747 - 214 = 230455363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230471777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10475978 + ... + 10475999.

It is an arithmetic number, because the mean of its divisors is an integer number (62855934).

Almost surely, 2230471747 is an apocalyptic number.

230471747 is a deficient number, since it is larger than the sum of its proper divisors (20951989).

230471747 is a wasteful number, since it uses less digits than its factorization.

230471747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20951988.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 230471747 is about 15181.2959591729. The cubic root of 230471747 is about 613.1111740362. Note that the first 4 decimals are identical.

The spelling of 230471747 in words is "two hundred thirty million, four hundred seventy-one thousand, seven hundred forty-seven".

Divisors: 1 11 20951977 230471747