Search a number
-
+
143230660 = 22523311371
BaseRepresentation
bin10001000100110…
…00011011000100
3100222111212112021
420202120123010
5243131340120
622113532524
73356304046
oct1042303304
9328455467
10143230660
1173939351
123bb74144
132389b991
1415045a96
15c893aaa
hex88986c4

143230660 has 24 divisors (see below), whose sum is σ = 313862976. Its totient is φ = 54801120.

The previous prime is 143230649. The next prime is 143230669. The reversal of 143230660 is 66032341.

It is not an unprimeable number, because it can be changed into a prime (143230669) 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, 155226 + ... + 156145.

It is an arithmetic number, because the mean of its divisors is an integer number (13077624).

Almost surely, 2143230660 is an apocalyptic number.

143230660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143230660 is an abundant number, since it is smaller than the sum of its proper divisors (170632316).

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

143230660 is a wasteful number, since it uses less digits than its factorization.

143230660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311403 (or 311401 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 143230660 is about 11967.9012362235. The cubic root of 143230660 is about 523.2131665442.

The spelling of 143230660 in words is "one hundred forty-three million, two hundred thirty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 311371 622742 1245484 1556855 3113710 6227420 7161533 14323066 28646132 35807665 71615330 143230660