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10189139 = 71143509
BaseRepresentation
bin100110110111…
…100101010011
3201011122212112
4212313211103
510102023024
61002215535
7152414642
oct46674523
921148775
1010189139
11582a284
1234b45ab
13215999c
1414d3359
15d6400e
hex9b7953

10189139 has 4 divisors (see below), whose sum is σ = 10332720. Its totient is φ = 10045560.

The previous prime is 10189129. The next prime is 10189141. The reversal of 10189139 is 93198101.

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

It is a cyclic number.

It is not a de Polignac number, because 10189139 - 220 = 9140563 is a prime.

It is a super-2 number, since 2×101891392 = 207637107122642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10189129) 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, 71684 + ... + 71825.

It is an arithmetic number, because the mean of its divisors is an integer number (2583180).

Almost surely, 210189139 is an apocalyptic number.

10189139 is a deficient number, since it is larger than the sum of its proper divisors (143581).

10189139 is an equidigital number, since it uses as much as digits as its factorization.

10189139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143580.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 10189139 is about 3192.0430761504. The cubic root of 10189139 is about 216.7932864099.

The spelling of 10189139 in words is "ten million, one hundred eighty-nine thousand, one hundred thirty-nine".

Divisors: 1 71 143509 10189139