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144501444 = 22324013929
BaseRepresentation
bin10001001110011…
…10101011000100
3101001220102201100
420213032223010
5243443021234
622201100100
73403146003
oct1047165304
9331812640
10144501444
117462708a
1240487630
1323c25219
1415296c3a
15ca45399
hex89ceac4

144501444 has 18 divisors (see below), whose sum is σ = 365267630. Its totient is φ = 48167136.

The previous prime is 144501439. The next prime is 144501473. The reversal of 144501444 is 444105441.

It can be written as a sum of positive squares in only one way, i.e., 112148100 + 32353344 = 10590^2 + 5688^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2006929 + ... + 2007000.

Almost surely, 2144501444 is an apocalyptic number.

It is an amenable number.

144501444 is an abundant number, since it is smaller than the sum of its proper divisors (220766186).

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

144501444 is a wasteful number, since it uses less digits than its factorization.

144501444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013939 (or 4013934 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 144501444 is about 12020.8753425031. The cubic root of 144501444 is about 524.7559791133.

Adding to 144501444 its reverse (444105441), we get a palindrome (588606885).

The spelling of 144501444 in words is "one hundred forty-four million, five hundred one thousand, four hundred forty-four".

Divisors: 1 2 3 4 6 9 12 18 36 4013929 8027858 12041787 16055716 24083574 36125361 48167148 72250722 144501444