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80028887500 = 22556402311
BaseRepresentation
bin100101010001000010…
…1111110100111001100
321122120100110201012101
41022202011332213030
52302344343400000
6100433104444444
75532122214502
oct1124205764714
9248510421171
1080028887500
1130a38247751
1213615619724
13771510a603
143c32938672
152135cc7e6a
hex12a217e9cc

80028887500 has 36 divisors (see below), whose sum is σ = 175052014704. Its totient is φ = 32011550000.

The previous prime is 80028887473. The next prime is 80028887513. The reversal of 80028887500 is 578882008.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3188656 + ... + 3213655.

It is an arithmetic number, because the mean of its divisors is an integer number (4862555964).

Almost surely, 280028887500 is an apocalyptic number.

It is an amenable number.

80028887500 is an abundant number, since it is smaller than the sum of its proper divisors (95023127204).

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

80028887500 is an equidigital number, since it uses as much as digits as its factorization.

80028887500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6402340 (or 6402318 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 46.

It can be divided in two parts, 800288 and 87500, that added together give a palindrome (887788).

The spelling of 80028887500 in words is "eighty billion, twenty-eight million, eight hundred eighty-seven thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 625 1250 2500 3125 6250 12500 6402311 12804622 25609244 32011555 64023110 128046220 160057775 320115550 640231100 800288875 1600577750 3201155500 4001444375 8002888750 16005777500 20007221875 40014443750 80028887500