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26854031 = 211112721
BaseRepresentation
bin110011001110…
…0001010001111
31212112022210202
41212130022033
523333312111
62355324115
7444153431
oct146341217
955468722
1026854031
1114181916
128bb063b
135743079
1437d0651
152556b3b
hex199c28f

26854031 has 4 divisors (see below), whose sum is σ = 26868864. Its totient is φ = 26839200.

The previous prime is 26854019. The next prime is 26854039. The reversal of 26854031 is 13045862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13045862 = 26522931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-26854031 is a prime.

It is a super-2 number, since 2×268540312 = 1442277961897922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26853985 and 26854003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26854039) 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 3 ways as a sum of consecutive naturals, for example, 4250 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (6717216).

Almost surely, 226854031 is an apocalyptic number.

26854031 is the 2318-th centered decagonal number.

26854031 is a deficient number, since it is larger than the sum of its proper divisors (14833).

26854031 is a wasteful number, since it uses less digits than its factorization.

26854031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14832.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 26854031 is about 5182.0875137342. The cubic root of 26854031 is about 299.4583968827.

Adding to 26854031 its reverse (13045862), we get a palindrome (39899893).

The spelling of 26854031 in words is "twenty-six million, eight hundred fifty-four thousand, thirty-one".

Divisors: 1 2111 12721 26854031