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230420215 = 546084043
BaseRepresentation
bin11011011101111…
…10111011110111
3121001120120010001
431232332323313
5432441421330
634510412131
75465353024
oct1556767367
9531516101
10230420215
11109080133
1265201047
133897862c
142286054b
15153679ca
hexdbbeef7

230420215 has 4 divisors (see below), whose sum is σ = 276504264. Its totient is φ = 184336168.

The previous prime is 230420213. The next prime is 230420219. The reversal of 230420215 is 512024032.

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 230420215 - 21 = 230420213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230420192 and 230420201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230420213) 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, 23042017 + ... + 23042026.

It is an arithmetic number, because the mean of its divisors is an integer number (69126066).

Almost surely, 2230420215 is an apocalyptic number.

230420215 is a deficient number, since it is larger than the sum of its proper divisors (46084049).

230420215 is an equidigital number, since it uses as much as digits as its factorization.

230420215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46084048.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 230420215 is about 15179.5986442330. The cubic root of 230420215 is about 613.0654747252.

Adding to 230420215 its reverse (512024032), we get a palindrome (742444247).

The spelling of 230420215 in words is "two hundred thirty million, four hundred twenty thousand, two hundred fifteen".

Divisors: 1 5 46084043 230420215