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144612885 = 3553181903
BaseRepresentation
bin10001001111010…
…01111000010101
3101002010002120210
420213221320111
5244010103020
622203320033
73404121624
oct1047517025
9332102523
10144612885
11746a288a
1240520019
1323c63b71
14152c56bb
15ca683e0
hex89e9e15

144612885 has 16 divisors (see below), whose sum is σ = 235747584. Its totient is φ = 75671232.

The previous prime is 144612877. The next prime is 144612887. The reversal of 144612885 is 588216441.

144612885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144612885 - 23 = 144612877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144612887) 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, 90157 + ... + 91746.

It is an arithmetic number, because the mean of its divisors is an integer number (14734224).

Almost surely, 2144612885 is an apocalyptic number.

144612885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144612885 is a deficient number, since it is larger than the sum of its proper divisors (91134699).

144612885 is a wasteful number, since it uses less digits than its factorization.

144612885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181964.

The product of its digits is 61440, while the sum is 39.

The square root of 144612885 is about 12025.5097605050. The cubic root of 144612885 is about 524.8908435192.

The spelling of 144612885 in words is "one hundred forty-four million, six hundred twelve thousand, eight hundred eighty-five".

Divisors: 1 3 5 15 53 159 265 795 181903 545709 909515 2728545 9640859 28922577 48204295 144612885