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230404240 = 24511261823
BaseRepresentation
bin11011011101110…
…11000010010000
3121001112202012101
431232323002100
5432440413430
634510210144
75465255323
oct1556730220
9531482171
10230404240
1110906a130
12651b3954
1338971291
14228587ba
1515362dca
hexdbbb090

230404240 has 40 divisors (see below), whose sum is σ = 584391168. Its totient is φ = 83783040.

The previous prime is 230404231. The next prime is 230404243. The reversal of 230404240 is 42404032.

230404240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2304042402 = 106172227619955200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (230404243) 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, 130032 + ... + 131791.

Almost surely, 2230404240 is an apocalyptic number.

230404240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230404240 is an abundant number, since it is smaller than the sum of its proper divisors (353986928).

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

230404240 is a wasteful number, since it uses less digits than its factorization.

230404240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261847 (or 261841 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 230404240 is about 15179.0724354290. The cubic root of 230404240 is about 613.0513064844.

Adding to 230404240 its reverse (42404032), we get a palindrome (272808272).

The spelling of 230404240 in words is "two hundred thirty million, four hundred four thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 440 880 261823 523646 1047292 1309115 2094584 2618230 2880053 4189168 5236460 5760106 10472920 11520212 14400265 20945840 23040424 28800530 46080848 57601060 115202120 230404240