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26880828 = 22313172313
BaseRepresentation
bin110011010001…
…0101100111100
31212120200120020
41212202230330
523340141303
62400052140
7444324522
oct146425474
955520506
1026880828
111419aa67
129004050
135752320
1437da312
15255ea53
hex19a2b3c

26880828 has 24 divisors (see below), whose sum is σ = 67547088. Its totient is φ = 8270976.

The previous prime is 26880827. The next prime is 26880881. The reversal of 26880828 is 82808862.

It is a self number, because there is not a number n which added to its sum of digits gives 26880828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26880827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86001 + ... + 86312.

It is an arithmetic number, because the mean of its divisors is an integer number (2814462).

Almost surely, 226880828 is an apocalyptic number.

It is an amenable number.

26880828 is an abundant number, since it is smaller than the sum of its proper divisors (40666260).

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

26880828 is a wasteful number, since it uses less digits than its factorization.

26880828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172333 (or 172331 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The square root of 26880828 is about 5184.6724100950. The cubic root of 26880828 is about 299.5579712440.

The spelling of 26880828 in words is "twenty-six million, eight hundred eighty thousand, eight hundred twenty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 172313 344626 516939 689252 1033878 2067756 2240069 4480138 6720207 8960276 13440414 26880828