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19608061 = 111782551
BaseRepresentation
bin100101011001…
…1000111111101
31100220012012111
41022303013331
520004424221
61540134021
7325444234
oct112630775
940805174
1019608061
1110082910
126697311
1340a6c05
142865b1b
151ac4be1
hex12b31fd

19608061 has 4 divisors (see below), whose sum is σ = 21390624. Its totient is φ = 17825500.

The previous prime is 19608059. The next prime is 19608073. The reversal of 19608061 is 16080691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19608061 - 21 = 19608059 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19608011) 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, 891265 + ... + 891286.

It is an arithmetic number, because the mean of its divisors is an integer number (5347656).

Almost surely, 219608061 is an apocalyptic number.

19608061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19608061 is a deficient number, since it is larger than the sum of its proper divisors (1782563).

19608061 is a wasteful number, since it uses less digits than its factorization.

19608061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782562.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 19608061 is about 4428.0990277996. The cubic root of 19608061 is about 269.6569076056.

The spelling of 19608061 in words is "nineteen million, six hundred eight thousand, sixty-one".

Divisors: 1 11 1782551 19608061