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10188139 = 13783703
BaseRepresentation
bin100110110111…
…010101101011
3201011121111111
4212313111223
510102010024
61002211151
7152412013
oct46672553
921147444
1010188139
115829555
1234b3ab7
1321593b0
1414d2c43
15d63a94
hex9b756b

10188139 has 4 divisors (see below), whose sum is σ = 10971856. Its totient is φ = 9404424.

The previous prime is 10188133. The next prime is 10188163. The reversal of 10188139 is 93188101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93188101 = 175481653.

It is a cyclic number.

It is not a de Polignac number, because 10188139 - 25 = 10188107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10188139.

It is not an unprimeable number, because it can be changed into a prime (10188133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391839 + ... + 391864.

It is an arithmetic number, because the mean of its divisors is an integer number (2742964).

Almost surely, 210188139 is an apocalyptic number.

10188139 is a deficient number, since it is larger than the sum of its proper divisors (783717).

10188139 is an equidigital number, since it uses as much as digits as its factorization.

10188139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783716.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 10188139 is about 3191.8864328168. The cubic root of 10188139 is about 216.7861938781.

The spelling of 10188139 in words is "ten million, one hundred eighty-eight thousand, one hundred thirty-nine".

Divisors: 1 13 783703 10188139