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28076855260 = 2251797842697
BaseRepresentation
bin11010001001100000…
…101100111111011100
32200110201120000202011
4122021200230333130
5430000133332020
620522012241004
72012525221606
oct321140547734
980421500664
1028076855260
11109a871aa13
125536a70164
132855b1992c
141504c78176
15ae4d9835a
hex68982cfdc

28076855260 has 24 divisors (see below), whose sum is σ = 59290796880. Its totient is φ = 11167999104.

The previous prime is 28076855221. The next prime is 28076855263. The reversal of 28076855260 is 6255867082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28076855263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3917769 + ... + 3924928.

It is an arithmetic number, because the mean of its divisors is an integer number (2470449870).

Almost surely, 228076855260 is an apocalyptic number.

28076855260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28076855260 is an abundant number, since it is smaller than the sum of its proper divisors (31213941620).

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

28076855260 is a wasteful number, since it uses less digits than its factorization.

28076855260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7842885 (or 7842883 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 28076855260 in words is "twenty-eight billion, seventy-six million, eight hundred fifty-five thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 179 358 716 895 1790 3580 7842697 15685394 31370788 39213485 78426970 156853940 1403842763 2807685526 5615371052 7019213815 14038427630 28076855260