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28090672854 = 2319246409411
BaseRepresentation
bin11010001010010101…
…011010011011010110
32200111200120000220220
4122022111122123112
5430012203012404
620523224335210
72013053531256
oct321225323326
980450500826
1028090672854
1110a054a8312
12553b614506
13285894701a
141506a33966
15ae61c74d9
hex68a55a6d6

28090672854 has 16 divisors (see below), whose sum is σ = 59138258880. Its totient is φ = 8870738760.

The previous prime is 28090672829. The next prime is 28090672859. The reversal of 28090672854 is 45827609082.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28090672797 and 28090672806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28090672859) 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, 123204592 + ... + 123204819.

It is an arithmetic number, because the mean of its divisors is an integer number (3696141180).

Almost surely, 228090672854 is an apocalyptic number.

28090672854 is an abundant number, since it is smaller than the sum of its proper divisors (31047586026).

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

28090672854 is a wasteful number, since it uses less digits than its factorization.

28090672854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246409435.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 28090672854 in words is "twenty-eight billion, ninety million, six hundred seventy-two thousand, eight hundred fifty-four".

Divisors: 1 2 3 6 19 38 57 114 246409411 492818822 739228233 1478456466 4681778809 9363557618 14045336427 28090672854