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230020015 = 546004003
BaseRepresentation
bin11011011010111…
…01001110101111
3121000211020010211
431231131032233
5432341120030
634454043251
75462065201
oct1555351657
9530736124
10230020015
11108927495
1265049527
1338868424
1422798771
15152d912a
hexdb5d3af

230020015 has 4 divisors (see below), whose sum is σ = 276024024. Its totient is φ = 184016008.

The previous prime is 230020003. The next prime is 230020039. The reversal of 230020015 is 510020032.

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 230020015 - 25 = 230019983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230019977 and 230020004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23001997 + ... + 23002006.

It is an arithmetic number, because the mean of its divisors is an integer number (69006006).

Almost surely, 2230020015 is an apocalyptic number.

230020015 is a deficient number, since it is larger than the sum of its proper divisors (46004009).

230020015 is an equidigital number, since it uses as much as digits as its factorization.

230020015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46004008.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 230020015 is about 15166.4107487566. The cubic root of 230020015 is about 612.7103395316.

Adding to 230020015 its reverse (510020032), we get a palindrome (740040047).

The spelling of 230020015 in words is "two hundred thirty million, twenty thousand, fifteen".

Divisors: 1 5 46004003 230020015