Search a number
-
+
144816880 = 24513178191
BaseRepresentation
bin10001010000110…
…11101011110000
3101002111110102011
420220123223300
5244033120010
622211532304
73405631435
oct1050335360
9332443364
10144816880
117482207a
12405ba094
1324005980
1415339b8c
15caa8a8a
hex8a1baf0

144816880 has 80 divisors (see below), whose sum is σ = 383975424. Its totient is φ = 50319360.

The previous prime is 144816871. The next prime is 144816883. The reversal of 144816880 is 88618441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144816883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13585 + ... + 21775.

Almost surely, 2144816880 is an apocalyptic number.

144816880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144816880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191987712).

144816880 is an abundant number, since it is smaller than the sum of its proper divisors (239158544).

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

144816880 is a wasteful number, since it uses less digits than its factorization.

144816880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234 (or 8228 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 144816880 is about 12033.9885324858. The cubic root of 144816880 is about 525.1375361504.

The spelling of 144816880 in words is "one hundred forty-four million, eight hundred sixteen thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 13 16 17 20 26 34 40 52 65 68 80 85 104 130 136 170 208 221 260 272 340 442 520 680 884 1040 1105 1360 1768 2210 3536 4420 8191 8840 16382 17680 32764 40955 65528 81910 106483 131056 139247 163820 212966 278494 327640 425932 532415 556988 655280 696235 851864 1064830 1113976 1392470 1703728 1810211 2129660 2227952 2784940 3620422 4259320 5569880 7240844 8518640 9051055 11139760 14481688 18102110 28963376 36204220 72408440 144816880