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144678071 = 292172031
BaseRepresentation
bin10001001111110…
…01110010110111
3101002020102000002
420213321302313
5244014144241
622204541515
73404512646
oct1047716267
9332212002
10144678071
117473785a
124055189b
1323c87735
141530135d
15ca7c89b
hex89f9cb7

144678071 has 6 divisors (see below), whose sum is σ = 149839872. Its totient is φ = 139688360.

The previous prime is 144678067. The next prime is 144678091. The reversal of 144678071 is 170876441.

It is not a de Polignac number, because 144678071 - 22 = 144678067 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 (144678091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85175 + ... + 86856.

It is an arithmetic number, because the mean of its divisors is an integer number (24973312).

Almost surely, 2144678071 is an apocalyptic number.

144678071 is a deficient number, since it is larger than the sum of its proper divisors (5161801).

144678071 is an equidigital number, since it uses as much as digits as its factorization.

144678071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172089 (or 172060 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 144678071 is about 12028.2197768415. The cubic root of 144678071 is about 524.9696986291.

The spelling of 144678071 in words is "one hundred forty-four million, six hundred seventy-eight thousand, seventy-one".

Divisors: 1 29 841 172031 4988899 144678071