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28119129 = 386310861
BaseRepresentation
bin110101101000…
…1000001011001
31221220121012020
41223101001121
524144303004
62442405053
7461002653
oct153210131
957817166
1028119129
1114966355
129500789
135a96b4c
143a3d6d3
1527068d9
hex1ad1059

28119129 has 8 divisors (see below), whose sum is σ = 37539072. Its totient is φ = 18722640.

The previous prime is 28119127. The next prime is 28119151. The reversal of 28119129 is 92191182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28119129 - 21 = 28119127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28119129.

It is not an unprimeable number, because it can be changed into a prime (28119121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2842 + ... + 8019.

It is an arithmetic number, because the mean of its divisors is an integer number (4692384).

Almost surely, 228119129 is an apocalyptic number.

It is an amenable number.

28119129 is a deficient number, since it is larger than the sum of its proper divisors (9419943).

28119129 is a wasteful number, since it uses less digits than its factorization.

28119129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11727.

The product of its digits is 2592, while the sum is 33.

The square root of 28119129 is about 5302.7473068212. The cubic root of 28119129 is about 304.0889376496.

The spelling of 28119129 in words is "twenty-eight million, one hundred nineteen thousand, one hundred twenty-nine".

Divisors: 1 3 863 2589 10861 32583 9373043 28119129