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13839061 = 29477209
BaseRepresentation
bin110100110010…
…101011010101
3222001002121211
4310302223111
512020322221
61212341421
7225426055
oct64625325
928032554
1013839061
1178a2545
124774871
132b370c2
141ba3565
1513356e1
hexd32ad5

13839061 has 4 divisors (see below), whose sum is σ = 14316300. Its totient is φ = 13361824.

The previous prime is 13839047. The next prime is 13839083. The reversal of 13839061 is 16093831.

13839061 = 26302 + 26312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6922161 + 6916900 = 2631^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 13839061 - 27 = 13838933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13839041) 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, 238576 + ... + 238633.

It is an arithmetic number, because the mean of its divisors is an integer number (3579075).

Almost surely, 213839061 is an apocalyptic number.

13839061 is the 2631-st centered square number.

It is an amenable number.

13839061 is a deficient number, since it is larger than the sum of its proper divisors (477239).

13839061 is an equidigital number, since it uses as much as digits as its factorization.

13839061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477238.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13839061 is about 3720.0888430251. The cubic root of 13839061 is about 240.0871269314.

The spelling of 13839061 in words is "thirteen million, eight hundred thirty-nine thousand, sixty-one".

Divisors: 1 29 477209 13839061