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19243955 = 53848791
BaseRepresentation
bin100100101101…
…0001110110011
31100012200202002
41021122032303
514411301310
61524244215
7322366553
oct111321663
940180662
1019243955
11a9542a5
12654066b
133caa273
1427ad163
151a51da5
hex125a3b3

19243955 has 4 divisors (see below), whose sum is σ = 23092752. Its totient is φ = 15395160.

The previous prime is 19243951. The next prime is 19243957. The reversal of 19243955 is 55934291.

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

It is not a de Polignac number, because 19243955 - 22 = 19243951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19243951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924391 + ... + 1924400.

It is an arithmetic number, because the mean of its divisors is an integer number (5773188).

Almost surely, 219243955 is an apocalyptic number.

19243955 is a deficient number, since it is larger than the sum of its proper divisors (3848797).

19243955 is an equidigital number, since it uses as much as digits as its factorization.

19243955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848796.

The product of its digits is 48600, while the sum is 38.

The square root of 19243955 is about 4386.7932479204. The cubic root of 19243955 is about 267.9773640568.

The spelling of 19243955 in words is "nineteen million, two hundred forty-three thousand, nine hundred fifty-five".

Divisors: 1 5 3848791 19243955