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19128053 = 72732579
BaseRepresentation
bin100100011110…
…1111011110101
31022222210202102
41020331323311
514344044203
61521551445
7321404630
oct110757365
938883672
1019128053
11a88520a
1264a5585
133c69599
14277cc17
151a2c888
hex123def5

19128053 has 4 divisors (see below), whose sum is σ = 21860640. Its totient is φ = 16395468.

The previous prime is 19128049. The next prime is 19128089. The reversal of 19128053 is 35082191.

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 a cyclic number.

It is not a de Polignac number, because 19128053 - 22 = 19128049 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 (19128353) 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, 1366283 + ... + 1366296.

It is an arithmetic number, because the mean of its divisors is an integer number (5465160).

Almost surely, 219128053 is an apocalyptic number.

It is an amenable number.

19128053 is a deficient number, since it is larger than the sum of its proper divisors (2732587).

19128053 is an equidigital number, since it uses as much as digits as its factorization.

19128053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732586.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 19128053 is about 4373.5629639917. The cubic root of 19128053 is about 267.4382912946.

The spelling of 19128053 in words is "nineteen million, one hundred twenty-eight thousand, fifty-three".

Divisors: 1 7 2732579 19128053