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230407540 = 225111047307
BaseRepresentation
bin11011011101110…
…11110101110100
3121001112220201121
431232323311310
5432441020130
634510233324
75465301046
oct1556736564
9531486647
10230407540
11109071660
12651b5844
133897292c
1422859a96
1515363d7a
hexdbbbd74

230407540 has 24 divisors (see below), whose sum is σ = 527843232. Its totient is φ = 83784480.

The previous prime is 230407517. The next prime is 230407543. The reversal of 230407540 is 45704032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230407543) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 523434 + ... + 523873.

It is an arithmetic number, because the mean of its divisors is an integer number (21993468).

Almost surely, 2230407540 is an apocalyptic number.

230407540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230407540 is an abundant number, since it is smaller than the sum of its proper divisors (297435692).

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

230407540 is a wasteful number, since it uses less digits than its factorization.

230407540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047327 (or 1047325 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 230407540 is about 15179.1811373341. The cubic root of 230407540 is about 613.0542333108.

The spelling of 230407540 in words is "two hundred thirty million, four hundred seven thousand, five hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1047307 2094614 4189228 5236535 10473070 11520377 20946140 23040754 46081508 57601885 115203770 230407540