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144878988 = 22312073249
BaseRepresentation
bin10001010001010…
…10110110001100
3101002121121121110
420220222312030
5244042111423
622213132020
73406310502
oct1050526614
9332547543
10144878988
1174864801
124062a010
1324028017
1415354672
15cabc193
hex8a2ad8c

144878988 has 12 divisors (see below), whose sum is σ = 338051000. Its totient is φ = 48292992.

The previous prime is 144878977. The next prime is 144878989. The reversal of 144878988 is 889878441.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (144878989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6036613 + ... + 6036636.

Almost surely, 2144878988 is an apocalyptic number.

It is an amenable number.

144878988 is an abundant number, since it is smaller than the sum of its proper divisors (193172012).

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

144878988 is a wasteful number, since it uses less digits than its factorization.

144878988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12073256 (or 12073254 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 57.

The square root of 144878988 is about 12036.5687801798. The cubic root of 144878988 is about 525.2125977975.

The spelling of 144878988 in words is "one hundred forty-four million, eight hundred seventy-eight thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 12073249 24146498 36219747 48292996 72439494 144878988