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19128070 = 2513147139
BaseRepresentation
bin100100011110…
…1111100000110
31022222210210001
41020331330012
514344044240
61521551514
7321404653
oct110757406
938883701
1019128070
11a885225
1264a559a
133c695b0
14277cc2a
151a2c89a
hex123df06

19128070 has 16 divisors (see below), whose sum is σ = 37079280. Its totient is φ = 7062624.

The previous prime is 19128049. The next prime is 19128089. The reversal of 19128070 is 7082191.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 73440 + ... + 73699.

It is an arithmetic number, because the mean of its divisors is an integer number (2317455).

Almost surely, 219128070 is an apocalyptic number.

19128070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19128070 is a deficient number, since it is larger than the sum of its proper divisors (17951210).

19128070 is a wasteful number, since it uses less digits than its factorization.

19128070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147159.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 19128070 is about 4373.5649074868. The cubic root of 19128070 is about 267.4383705229.

The spelling of 19128070 in words is "nineteen million, one hundred twenty-eight thousand, seventy".

Divisors: 1 2 5 10 13 26 65 130 147139 294278 735695 1471390 1912807 3825614 9564035 19128070