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230626540 = 22565317659
BaseRepresentation
bin11011011111100…
…01010011101100
3121001222001010201
431233301103230
5433020022130
634515043244
75500202404
oct1557612354
9531861121
10230626540
11109201151
12652a0524
1338a1b511
14228b5804
15153a8bca
hexdbf14ec

230626540 has 24 divisors (see below), whose sum is σ = 485084880. Its totient is φ = 92104128.

The previous prime is 230626523. The next prime is 230626597. The reversal of 230626540 is 45626032.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 230626499 and 230626508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4231 + ... + 21889.

It is an arithmetic number, because the mean of its divisors is an integer number (20211870).

Almost surely, 2230626540 is an apocalyptic number.

230626540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230626540 is an abundant number, since it is smaller than the sum of its proper divisors (254458340).

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

230626540 is a wasteful number, since it uses less digits than its factorization.

230626540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18321 (or 18319 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 230626540 is about 15186.3932518554. The cubic root of 230626540 is about 613.2484057213.

The spelling of 230626540 in words is "two hundred thirty million, six hundred twenty-six thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 653 1306 2612 3265 6530 13060 17659 35318 70636 88295 176590 353180 11531327 23062654 46125308 57656635 115313270 230626540