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19189029 = 320393137
BaseRepresentation
bin100100100110…
…0110100100101
31100002220101210
41021030310211
514403022104
61523142033
7322050456
oct111146445
940086353
1019189029
11a917002
126514919
133c8b272
14279712d
151a40989
hex124cd25

19189029 has 8 divisors (see below), whose sum is σ = 25606080. Its totient is φ = 12782336.

The previous prime is 19189013. The next prime is 19189033. The reversal of 19189029 is 92098191.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19189029 - 24 = 19189013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19189229) 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, 4549 + ... + 7685.

It is an arithmetic number, because the mean of its divisors is an integer number (3200760).

Almost surely, 219189029 is an apocalyptic number.

It is an amenable number.

19189029 is a deficient number, since it is larger than the sum of its proper divisors (6417051).

19189029 is a wasteful number, since it uses less digits than its factorization.

19189029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 19189029 is about 4380.5283927855. The cubic root of 19189029 is about 267.7221678925.

The spelling of 19189029 in words is "nineteen million, one hundred eighty-nine thousand, twenty-nine".

Divisors: 1 3 2039 3137 6117 9411 6396343 19189029