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28379607284 = 2271013557403
BaseRepresentation
bin11010011011100011…
…100111000011110100
32201020211020102110002
4122123203213003310
5431110134413114
621012025250432
72023162452560
oct323343470364
981224212402
1028379607284
1111043603aa6
125600333a18
1328a376c242
1415331666a0
15b1174c7de
hex69b8e70f4

28379607284 has 12 divisors (see below), whose sum is σ = 56759214624. Its totient is φ = 12162688824.

The previous prime is 28379607259. The next prime is 28379607307. The reversal of 28379607284 is 48270697382.

It is a happy number.

28379607284 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506778674 + ... + 506778729.

It is an arithmetic number, because the mean of its divisors is an integer number (4729934552).

Almost surely, 228379607284 is an apocalyptic number.

It is an amenable number.

28379607284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28379607284 is a wasteful number, since it uses less digits than its factorization.

28379607284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013557414 (or 1013557412 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 28379607284 in words is "twenty-eight billion, three hundred seventy-nine million, six hundred seven thousand, two hundred eighty-four".

Divisors: 1 2 4 7 14 28 1013557403 2027114806 4054229612 7094901821 14189803642 28379607284