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13800933 = 321533437
BaseRepresentation
bin110100101001…
…010111100101
3221222011022200
4310221113211
512013112213
61211445113
7225206646
oct64512745
927864280
1013800933
117876933
124756799
132b22943
141b936cd
151329273
hexd295e5

13800933 has 6 divisors (see below), whose sum is σ = 19934694. Its totient is φ = 9200616.

The previous prime is 13800931. The next prime is 13800937. The reversal of 13800933 is 33900831.

It can be written as a sum of positive squares in only one way, i.e., 12723489 + 1077444 = 3567^2 + 1038^2 .

It is not a de Polignac number, because 13800933 - 21 = 13800931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13800897 and 13800906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13800931) 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 5 ways as a sum of consecutive naturals, for example, 766710 + ... + 766727.

It is an arithmetic number, because the mean of its divisors is an integer number (3322449).

Almost surely, 213800933 is an apocalyptic number.

It is an amenable number.

13800933 is a deficient number, since it is larger than the sum of its proper divisors (6133761).

13800933 is a wasteful number, since it uses less digits than its factorization.

13800933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533443 (or 1533440 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13800933 is about 3714.9606996575. The cubic root of 13800933 is about 239.8664361000.

The spelling of 13800933 in words is "thirteen million, eight hundred thousand, nine hundred thirty-three".

Divisors: 1 3 9 1533437 4600311 13800933