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230132140 = 22571643801
BaseRepresentation
bin11011011011110…
…00100110101100
3121001000220221121
431231320212230
5432403212030
634500310324
75463043120
oct1555704654
9531026847
10230132140
111089a3757
12650a23a4
13388a7484
14227c7580
151530c47a
hexdb789ac

230132140 has 24 divisors (see below), whose sum is σ = 552317472. Its totient is φ = 78902400.

The previous prime is 230132137. The next prime is 230132143. The reversal of 230132140 is 41231032.

It is a happy number.

230132140 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (230132137) and next prime (230132143).

230132140 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (230132143) 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, 821761 + ... + 822040.

It is an arithmetic number, because the mean of its divisors is an integer number (23013228).

Almost surely, 2230132140 is an apocalyptic number.

230132140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230132140 is an abundant number, since it is smaller than the sum of its proper divisors (322185332).

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

230132140 is a wasteful number, since it uses less digits than its factorization.

230132140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643817 (or 1643815 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 230132140 is about 15170.1067893407. The cubic root of 230132140 is about 612.8098801260.

Adding to 230132140 its reverse (41231032), we get a palindrome (271363172).

The spelling of 230132140 in words is "two hundred thirty million, one hundred thirty-two thousand, one hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1643801 3287602 6575204 8219005 11506607 16438010 23013214 32876020 46026428 57533035 115066070 230132140