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13800281 = 114726693
BaseRepresentation
bin110100101001…
…001101011001
3221222010102112
4310221031121
512013102111
61211442105
7225205025
oct64511531
927863375
1013800281
1178763a0
124756335
132b22561
141b93385
151328e8b
hexd29359

13800281 has 8 divisors (see below), whose sum is σ = 15375744. Its totient is φ = 12278320.

The previous prime is 13800221. The next prime is 13800307. The reversal of 13800281 is 18200831.

13800281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13800281 - 26 = 13800217 is a prime.

It is a super-2 number, since 2×138002812 = 380895511357922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13800211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12830 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (1921968).

Almost surely, 213800281 is an apocalyptic number.

13800281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13800281 is a deficient number, since it is larger than the sum of its proper divisors (1575463).

13800281 is a wasteful number, since it uses less digits than its factorization.

13800281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26751.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 13800281 is about 3714.8729453374. The cubic root of 13800281 is about 239.8626586892.

The spelling of 13800281 in words is "thirteen million, eight hundred thousand, two hundred eighty-one".

Divisors: 1 11 47 517 26693 293623 1254571 13800281