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230626681 = 2341244567
BaseRepresentation
bin11011011111100…
…01010101111001
3121001222001022221
431233301111321
5433020023211
634515044041
75500202665
oct1557612571
9531861287
10230626681
1110920126a
12652a0621
1338a1b5bc
14228b58a5
15153a8c71
hexdbf1579

230626681 has 8 divisors (see below), whose sum is σ = 246524544. Its totient is φ = 215218080.

The previous prime is 230626667. The next prime is 230626699. The reversal of 230626681 is 186626032.

It is a happy number.

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 230626681 - 221 = 228529529 is a prime.

It is a super-2 number, since 2×2306266812 = 106377331978151522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230626631) 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, 121341 + ... + 123226.

It is an arithmetic number, because the mean of its divisors is an integer number (30815568).

Almost surely, 2230626681 is an apocalyptic number.

It is an amenable number.

230626681 is a deficient number, since it is larger than the sum of its proper divisors (15897863).

230626681 is a wasteful number, since it uses less digits than its factorization.

230626681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244631.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 230626681 is about 15186.3978941683. The cubic root of 230626681 is about 613.2485306968.

The spelling of 230626681 in words is "two hundred thirty million, six hundred twenty-six thousand, six hundred eighty-one".

Divisors: 1 23 41 943 244567 5625041 10027247 230626681