Search a number
-
+
26881841 = 723071787
BaseRepresentation
bin110011010001…
…0111100110001
31212120201221202
41212202330301
523340204331
62400100545
7444330500
oct146427461
955521852
1026881841
11141a07a8
129004755
13575291c
1437da837
15255eecb
hex19a2f31

26881841 has 12 divisors (see below), whose sum is σ = 31390128. Its totient is φ = 22953672.

The previous prime is 26881831. The next prime is 26881843. The reversal of 26881841 is 14818862.

It is a de Polignac number, because none of the positive numbers 2k-26881841 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26881795 and 26881804.

It is not an unprimeable number, because it can be changed into a prime (26881843) 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 11 ways as a sum of consecutive naturals, for example, 14150 + ... + 15936.

It is an arithmetic number, because the mean of its divisors is an integer number (2615844).

Almost surely, 226881841 is an apocalyptic number.

It is an amenable number.

26881841 is a deficient number, since it is larger than the sum of its proper divisors (4508287).

26881841 is a wasteful number, since it uses less digits than its factorization.

26881841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 2101 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 26881841 is about 5184.7701009784. The cubic root of 26881841 is about 299.5617341293.

The spelling of 26881841 in words is "twenty-six million, eight hundred eighty-one thousand, eight hundred forty-one".

Divisors: 1 7 49 307 1787 2149 12509 15043 87563 548609 3840263 26881841