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26825481 = 323780557
BaseRepresentation
bin110011001010…
…1001100001001
31212110212122100
41212111030021
523331403411
62354544013
7444004254
oct146251411
955425570
1026825481
1114162421
128b98009
135733087
1437c409b
15254d456
hex1995309

26825481 has 12 divisors (see below), whose sum is σ = 39795652. Its totient is φ = 17400096.

The previous prime is 26825479. The next prime is 26825483. The reversal of 26825481 is 18452862.

It is an interprime number because it is at equal distance from previous prime (26825479) and next prime (26825483).

It can be written as a sum of positive squares in 2 ways, for example, as 20169081 + 6656400 = 4491^2 + 2580^2 .

It is not a de Polignac number, because 26825481 - 21 = 26825479 is a prime.

It is a super-2 number, since 2×268254812 = 1439212861762722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26825483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39946 + ... + 40611.

Almost surely, 226825481 is an apocalyptic number.

It is an amenable number.

26825481 is a deficient number, since it is larger than the sum of its proper divisors (12970171).

26825481 is a wasteful number, since it uses less digits than its factorization.

26825481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80600 (or 80597 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 26825481 is about 5179.3320997982. The cubic root of 26825481 is about 299.3522356779.

The spelling of 26825481 in words is "twenty-six million, eight hundred twenty-five thousand, four hundred eighty-one".

Divisors: 1 3 9 37 111 333 80557 241671 725013 2980609 8941827 26825481