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19288093 = 1113712799
BaseRepresentation
bin100100110010…
…1000000011101
31100021221021211
41021211000131
514414204333
61525224421
7322642336
oct111450035
940257254
1019288093
11a984480
126562111
133cc4396
1427c128d
151a5eecd
hex126501d

19288093 has 8 divisors (see below), whose sum is σ = 21196800. Its totient is φ = 17405280.

The previous prime is 19288091. The next prime is 19288127. The reversal of 19288093 is 39088291.

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 19288093 - 21 = 19288091 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 (19288091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4893 + ... + 7906.

It is an arithmetic number, because the mean of its divisors is an integer number (2649600).

Almost surely, 219288093 is an apocalyptic number.

It is an amenable number.

19288093 is a deficient number, since it is larger than the sum of its proper divisors (1908707).

19288093 is a wasteful number, since it uses less digits than its factorization.

19288093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 19288093 is about 4391.8211484531. The cubic root of 19288093 is about 268.1820855481.

The spelling of 19288093 in words is "nineteen million, two hundred eighty-eight thousand, ninety-three".

Divisors: 1 11 137 1507 12799 140789 1753463 19288093