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26208985 = 5111728031
BaseRepresentation
bin110001111111…
…0101011011001
31211022112222011
41203332223121
523202141420
62333425521
7435526015
oct143765331
954275864
1026208985
1113881220
12893b2a1
13557859a
1436a3545
15247a95a
hex18fead9

26208985 has 16 divisors (see below), whose sum is σ = 36329472. Its totient is φ = 17939200.

The previous prime is 26208947. The next prime is 26208989. The reversal of 26208985 is 58980262.

It is not a de Polignac number, because 26208985 - 215 = 26176217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26208989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13081 + ... + 14950.

It is an arithmetic number, because the mean of its divisors is an integer number (2270592).

Almost surely, 226208985 is an apocalyptic number.

It is an amenable number.

26208985 is a deficient number, since it is larger than the sum of its proper divisors (10120487).

26208985 is a wasteful number, since it uses less digits than its factorization.

26208985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28064.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 26208985 is about 5119.4711640950. The cubic root of 26208985 is about 297.0412296755.

The spelling of 26208985 in words is "twenty-six million, two hundred eight thousand, nine hundred eighty-five".

Divisors: 1 5 11 17 55 85 187 935 28031 140155 308341 476527 1541705 2382635 5241797 26208985