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139288060 = 22579199443
BaseRepresentation
bin10000100110101…
…01110111111100
3100201002120022001
420103111313330
5241124204220
621453232044
73310633432
oct1023256774
9321076261
10139288060
11716961aa
123a792624
1322b1b292
14146dad52
15c36580a
hex84d5dfc

139288060 has 48 divisors (see below), whose sum is σ = 298368000. Its totient is φ = 54609984.

The previous prime is 139288003. The next prime is 139288067. The reversal of 139288060 is 60882931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139288067) 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, 314199 + ... + 314641.

It is an arithmetic number, because the mean of its divisors is an integer number (6216000).

Almost surely, 2139288060 is an apocalyptic number.

139288060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139288060 is an abundant number, since it is smaller than the sum of its proper divisors (159079940).

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

139288060 is a wasteful number, since it uses less digits than its factorization.

139288060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 139288060 is about 11802.0362649841. The cubic root of 139288060 is about 518.3677367689.

The spelling of 139288060 in words is "one hundred thirty-nine million, two hundred eighty-eight thousand, sixty".

Divisors: 1 2 4 5 10 20 79 158 199 316 395 398 443 790 796 886 995 1580 1772 1990 2215 3980 4430 8860 15721 31442 34997 62884 69994 78605 88157 139988 157210 174985 176314 314420 349970 352628 440785 699940 881570 1763140 6964403 13928806 27857612 34822015 69644030 139288060