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144090 = 23251601
BaseRepresentation
bin100011001011011010
321022122200
4203023122
514102330
63031030
71140042
oct431332
9238580
10144090
1199291
126b476
135077b
143a722
152ca60
hex232da

144090 has 24 divisors (see below), whose sum is σ = 374868. Its totient is φ = 38400.

The previous prime is 144073. The next prime is 144103. The reversal of 144090 is 90441.

144090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 131769 + 12321 = 363^2 + 111^2 .

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711 + ... + 890.

2144090 is an apocalyptic number.

144090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144090 is an abundant number, since it is smaller than the sum of its proper divisors (230778).

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

144090 is a wasteful number, since it uses less digits than its factorization.

144090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 144090 is about 379.5918861093. The cubic root of 144090 is about 52.4257453658.

It can be divided in two parts, 1440 and 90, that multiplied together give a square (129600 = 3602).

The spelling of 144090 in words is "one hundred forty-four thousand, ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1601 3202 4803 8005 9606 14409 16010 24015 28818 48030 72045 144090