Search a number
-
+
80144142620 = 225231731007089
BaseRepresentation
bin100101010100011110…
…1101001000100011100
321122212101100021111112
41022220331221010130
52303113400030440
6100452343041152
75535021654323
oct1125075510434
9248771307445
1080144142620
1130a97308613
12136481401b8
137732c628c9
143c43d7b0ba
152140e92965
hex12a8f6911c

80144142620 has 48 divisors (see below), whose sum is σ = 176635529280. Its totient is φ = 30486567936.

The previous prime is 80144142587. The next prime is 80144142671. The reversal of 80144142620 is 2624144108.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 423965 + ... + 583124.

It is an arithmetic number, because the mean of its divisors is an integer number (3679906860).

Almost surely, 280144142620 is an apocalyptic number.

It is an amenable number.

80144142620 is an abundant number, since it is smaller than the sum of its proper divisors (96491386660).

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

80144142620 is a wasteful number, since it uses less digits than its factorization.

80144142620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007294 (or 1007292 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

Adding to 80144142620 its reverse (2624144108), we get a palindrome (82768286728).

The spelling of 80144142620 in words is "eighty billion, one hundred forty-four million, one hundred forty-two thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 23 46 92 115 173 230 346 460 692 865 1730 3460 3979 7958 15916 19895 39790 79580 1007089 2014178 4028356 5035445 10070890 20141780 23163047 46326094 92652188 115815235 174226397 231630470 348452794 463260940 696905588 871131985 1742263970 3484527940 4007207131 8014414262 16028828524 20036035655 40072071310 80144142620