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230623518 = 23139276527
BaseRepresentation
bin11011011111100…
…00100100011110
3121001221212222210
431233300210132
5433014423033
634515021250
75500160526
oct1557604436
9531855883
10230623518
111091a9954
126529a826
1338a1a028
14228b4686
15153a7d63
hexdbf091e

230623518 has 16 divisors (see below), whose sum is σ = 464567040. Its totient is φ = 76321176.

The previous prime is 230623517. The next prime is 230623531. The reversal of 230623518 is 815326032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230623517) 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, 137430 + ... + 139097.

It is an arithmetic number, because the mean of its divisors is an integer number (29035440).

Almost surely, 2230623518 is an apocalyptic number.

230623518 is an abundant number, since it is smaller than the sum of its proper divisors (233943522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230623518 is a wasteful number, since it uses less digits than its factorization.

230623518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276671.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 230623518 is about 15186.2937545670. The cubic root of 230623518 is about 613.2457271559.

The spelling of 230623518 in words is "two hundred thirty million, six hundred twenty-three thousand, five hundred eighteen".

Divisors: 1 2 3 6 139 278 417 834 276527 553054 829581 1659162 38437253 76874506 115311759 230623518