Search a number
-
+
144094881 = 3729236609
BaseRepresentation
bin10001001011010…
…11011010100001
3101001010210000110
420211223122201
5243342014011
622144241533
73366533460
oct1045533241
9331123013
10144094881
1174379687
12403102a9
1323b12158
14151cc9d7
15c9b4ba6
hex896b6a1

144094881 has 16 divisors (see below), whose sum is σ = 227145600. Its totient is φ = 79500288.

The previous prime is 144094859. The next prime is 144094883. The reversal of 144094881 is 188490441.

It is not a de Polignac number, because 144094881 - 29 = 144094369 is a prime.

It is a super-2 number, since 2×1440948812 = 41526669460808322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144094883) 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, 117696 + ... + 118913.

It is an arithmetic number, because the mean of its divisors is an integer number (14196600).

Almost surely, 2144094881 is an apocalyptic number.

It is an amenable number.

144094881 is a deficient number, since it is larger than the sum of its proper divisors (83050719).

144094881 is a wasteful number, since it uses less digits than its factorization.

144094881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236648.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 144094881 is about 12003.9527239989. The cubic root of 144094881 is about 524.2633732727.

The spelling of 144094881 in words is "one hundred forty-four million, ninety-four thousand, eight hundred eighty-one".

Divisors: 1 3 7 21 29 87 203 609 236609 709827 1656263 4968789 6861661 20584983 48031627 144094881