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26314981 = 7111917987
BaseRepresentation
bin110010001100…
…0100011100101
31211111221100221
41210120203211
523214034411
62340004341
7436450030
oct144304345
954457327
1026314981
1113943920
1289906b1
1355b48c4
1436d0017
15249c071
hex19188e5

26314981 has 16 divisors (see below), whose sum is σ = 34536960. Its totient is φ = 19424880.

The previous prime is 26314961. The next prime is 26314999. The reversal of 26314981 is 18941362.

It is a cyclic number.

It is not a de Polignac number, because 26314981 - 211 = 26312933 is a prime.

It is a super-2 number, since 2×263149812 = 1384956450060722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26314931) 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 15 ways as a sum of consecutive naturals, for example, 7531 + ... + 10456.

It is an arithmetic number, because the mean of its divisors is an integer number (2158560).

Almost surely, 226314981 is an apocalyptic number.

It is an amenable number.

26314981 is a deficient number, since it is larger than the sum of its proper divisors (8221979).

26314981 is a wasteful number, since it uses less digits than its factorization.

26314981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18024.

The product of its digits is 10368, while the sum is 34.

The square root of 26314981 is about 5129.8129595532. The cubic root of 26314981 is about 297.4411285717.

The spelling of 26314981 in words is "twenty-six million, three hundred fourteen thousand, nine hundred eighty-one".

Divisors: 1 7 11 19 77 133 209 1463 17987 125909 197857 341753 1384999 2392271 3759283 26314981