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19410023 = 137141679
BaseRepresentation
bin100101000001…
…0110001100111
31100112010112202
41022002301213
514432110043
61532005115
7323660663
oct112026147
940463482
1019410023
11aa58046
12660079b
134037a29
1428138a3
151a861b8
hex1282c67

19410023 has 4 divisors (see below), whose sum is σ = 19551840. Its totient is φ = 19268208.

The previous prime is 19410011. The next prime is 19410037. The reversal of 19410023 is 32001491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32001491 = 191684289.

It is a cyclic number.

It is not a de Polignac number, because 19410023 - 26 = 19409959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19409977 and 19410004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19410623) 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 3 ways as a sum of consecutive naturals, for example, 70703 + ... + 70976.

It is an arithmetic number, because the mean of its divisors is an integer number (4887960).

Almost surely, 219410023 is an apocalyptic number.

19410023 is a deficient number, since it is larger than the sum of its proper divisors (141817).

19410023 is a wasteful number, since it uses less digits than its factorization.

19410023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141816.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 19410023 is about 4405.6807646492. The cubic root of 19410023 is about 268.7460047720.

The spelling of 19410023 in words is "nineteen million, four hundred ten thousand, twenty-three".

Divisors: 1 137 141679 19410023