Search a number
-
+
144471901 = 7233312711
BaseRepresentation
bin10001001110001…
…11011101011101
3101001211221012011
420213013131131
5243441100101
622200311221
73402663610
oct1047073535
9331757164
10144471901
1174606972
1240472511
1323c14942
141528a177
15ca3b751
hex89c775d

144471901 has 16 divisors (see below), whose sum is σ = 172873728. Its totient is φ = 118047600.

The previous prime is 144471869. The next prime is 144471913. The reversal of 144471901 is 109174441.

It is a cyclic number.

It is not a de Polignac number, because 144471901 - 25 = 144471869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144471931) 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, 51936 + ... + 54646.

It is an arithmetic number, because the mean of its divisors is an integer number (10804608).

Almost surely, 2144471901 is an apocalyptic number.

It is an amenable number.

144471901 is a deficient number, since it is larger than the sum of its proper divisors (28401827).

144471901 is a wasteful number, since it uses less digits than its factorization.

144471901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 144471901 is about 12019.6464590270. The cubic root of 144471901 is about 524.7202149435.

The spelling of 144471901 in words is "one hundred forty-four million, four hundred seventy-one thousand, nine hundred one".

Divisors: 1 7 23 161 331 2317 2711 7613 18977 53291 62353 436471 897341 6281387 20638843 144471901