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19520341 = 149131009
BaseRepresentation
bin100101001110…
…1101101010101
31100201201212121
41022131231111
514444122331
61534215541
7324630421
oct112355525
940651777
1019520341
1110022a15
1266545b1
134075cc9
142841b81
151aa8c11
hex129db55

19520341 has 4 divisors (see below), whose sum is σ = 19651500. Its totient is φ = 19389184.

The previous prime is 19520339. The next prime is 19520351. The reversal of 19520341 is 14302591.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8820900 + 10699441 = 2970^2 + 3271^2 .

It is a cyclic number.

It is not a de Polignac number, because 19520341 - 21 = 19520339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19520311) 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, 65356 + ... + 65653.

It is an arithmetic number, because the mean of its divisors is an integer number (4912875).

Almost surely, 219520341 is an apocalyptic number.

It is an amenable number.

19520341 is a deficient number, since it is larger than the sum of its proper divisors (131159).

19520341 is a wasteful number, since it uses less digits than its factorization.

19520341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131158.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 19520341 is about 4418.1829975681. The cubic root of 19520341 is about 269.2541877630.

The spelling of 19520341 in words is "nineteen million, five hundred twenty thousand, three hundred forty-one".

Divisors: 1 149 131009 19520341