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230570247 = 376856749
BaseRepresentation
bin11011011111000…
…11100100000111
3121001212011220210
431233203210013
5433011221442
634513530503
75466546315
oct1557434407
9531764823
10230570247
11109172926
1265273a33
13389cb9cb
142289d0b5
151539719c
hexdbe3907

230570247 has 4 divisors (see below), whose sum is σ = 307427000. Its totient is φ = 153713496.

The previous prime is 230570237. The next prime is 230570251. The reversal of 230570247 is 742075032.

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

It is not a de Polignac number, because 230570247 - 212 = 230566151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230570227) 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, 38428372 + ... + 38428377.

It is an arithmetic number, because the mean of its divisors is an integer number (76856750).

Almost surely, 2230570247 is an apocalyptic number.

230570247 is a deficient number, since it is larger than the sum of its proper divisors (76856753).

230570247 is an equidigital number, since it uses as much as digits as its factorization.

230570247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76856752.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 230570247 is about 15184.5397361922. The cubic root of 230570247 is about 613.1985062870.

The spelling of 230570247 in words is "two hundred thirty million, five hundred seventy thousand, two hundred forty-seven".

Divisors: 1 3 76856749 230570247