Search a number
-
+
143145912 = 23371365543
BaseRepresentation
bin10001000100000…
…11101110111000
3100222100120021110
420202003232320
5243121132122
622112040320
73355502010
oct1042035670
9328316243
10143145912
1173890708
123bb330a0
132386c230
1415022c40
15c87890c
hex8883bb8

143145912 has 64 divisors (see below), whose sum is σ = 440455680. Its totient is φ = 37752192.

The previous prime is 143145911. The next prime is 143145923. The reversal of 143145912 is 219541341.

It is a self number, because there is not a number n which added to its sum of digits gives 143145912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143145911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30588 + ... + 34955.

It is an arithmetic number, because the mean of its divisors is an integer number (6882120).

Almost surely, 2143145912 is an apocalyptic number.

143145912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

143145912 is an abundant number, since it is smaller than the sum of its proper divisors (297309768).

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

143145912 is a wasteful number, since it uses less digits than its factorization.

143145912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65572 (or 65568 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 143145912 is about 11964.3600748222. The cubic root of 143145912 is about 523.1099530336.

The spelling of 143145912 in words is "one hundred forty-three million, one hundred forty-five thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 7 8 12 13 14 21 24 26 28 39 42 52 56 78 84 91 104 156 168 182 273 312 364 546 728 1092 2184 65543 131086 196629 262172 393258 458801 524344 786516 852059 917602 1376403 1573032 1704118 1835204 2556177 2752806 3408236 3670408 5112354 5505612 5964413 6816472 10224708 11011224 11928826 17893239 20449416 23857652 35786478 47715304 71572956 143145912