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144028860 = 22352400481
BaseRepresentation
bin10001001010110…
…11010010111100
3101001000102110020
420211123102330
5243332410420
622143012140
73366140133
oct1045332274
9331012406
10144028860
1174334018
124029a050
1323abb0a1
14151b291a
15c9a0340
hex895b4bc

144028860 has 24 divisors (see below), whose sum is σ = 403280976. Its totient is φ = 38407680.

The previous prime is 144028849. The next prime is 144028861. The reversal of 144028860 is 68820441.

144028860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×1440288603 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144028861) 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, 1200181 + ... + 1200300.

It is an arithmetic number, because the mean of its divisors is an integer number (16803374).

Almost surely, 2144028860 is an apocalyptic number.

144028860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144028860 is an abundant number, since it is smaller than the sum of its proper divisors (259252116).

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

144028860 is a wasteful number, since it uses less digits than its factorization.

144028860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400493 (or 2400491 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 144028860 is about 12001.2024397558. The cubic root of 144028860 is about 524.1832925197.

The spelling of 144028860 in words is "one hundred forty-four million, twenty-eight thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 2400481 4800962 7201443 9601924 12002405 14402886 24004810 28805772 36007215 48009620 72014430 144028860