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144558980 = 2257399013
BaseRepresentation
bin10001001110111…
…00101110000100
3101002000100122022
420213130232010
5244001341410
622202222312
73403505516
oct1047345604
9332010568
10144558980
1174666335
12404b4998
1323c45477
14152adbb6
15ca57455
hex89dcb84

144558980 has 24 divisors (see below), whose sum is σ = 307735512. Its totient is φ = 57030912.

The previous prime is 144558943. The next prime is 144559001. The reversal of 144558980 is 89855441.

It can be written as a sum of positive squares in 4 ways, for example, as 174724 + 144384256 = 418^2 + 12016^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 48047 + ... + 50966.

It is an arithmetic number, because the mean of its divisors is an integer number (12822313).

Almost surely, 2144558980 is an apocalyptic number.

144558980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144558980 is an abundant number, since it is smaller than the sum of its proper divisors (163176532).

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

144558980 is a wasteful number, since it uses less digits than its factorization.

144558980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99095 (or 99093 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 144558980 is about 12023.2682744751. The cubic root of 144558980 is about 524.8256170648.

The spelling of 144558980 in words is "one hundred forty-four million, five hundred fifty-eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 99013 198026 396052 495065 990130 1980260 7227949 14455898 28911796 36139745 72279490 144558980