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13880054 = 26940027
BaseRepresentation
bin110100111100…
…101011110110
3222010011212002
4310330223312
512023130204
61213255302
7225656426
oct64745366
928104762
1013880054
117920321
124794532
132b4c966
141bb4486
15134291e
hexd3caf6

13880054 has 4 divisors (see below), whose sum is σ = 20820084. Its totient is φ = 6940026.

The previous prime is 13880047. The next prime is 13880057. The reversal of 13880054 is 45008831.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 13879999 and 13880026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13880057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3470012 + ... + 3470015.

It is an arithmetic number, because the mean of its divisors is an integer number (5205021).

Almost surely, 213880054 is an apocalyptic number.

13880054 is a deficient number, since it is larger than the sum of its proper divisors (6940030).

13880054 is an equidigital number, since it uses as much as digits as its factorization.

13880054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6940029.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 13880054 is about 3725.5944492121. The cubic root of 13880054 is about 240.3239491147.

Adding to 13880054 its reverse (45008831), we get a palindrome (58888885).

The spelling of 13880054 in words is "thirteen million, eight hundred eighty thousand, fifty-four".

Divisors: 1 2 6940027 13880054