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19128306270 = 2352327722183
BaseRepresentation
bin10001110100001000…
…101100101001011110
31211101002021122020210
4101310020230221132
5303133321300040
612442025553250
71245005630523
oct216410545136
954332248223
1019128306270
118126480687
12385a045826
131a5ac12328
14cd661714a
1576e481480
hex47422ca5e

19128306270 has 32 divisors (see below), whose sum is σ = 47903933952. Its totient is φ = 4879104032.

The previous prime is 19128306269. The next prime is 19128306277. The reversal of 19128306270 is 7260382191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19128306277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13860402 + ... + 13861781.

It is an arithmetic number, because the mean of its divisors is an integer number (1496997936).

Almost surely, 219128306270 is an apocalyptic number.

19128306270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19128306270 is an abundant number, since it is smaller than the sum of its proper divisors (28775627682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19128306270 is a wasteful number, since it uses less digits than its factorization.

19128306270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27722216.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 19128306270 in words is "nineteen billion, one hundred twenty-eight million, three hundred six thousand, two hundred seventy".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 27722183 55444366 83166549 138610915 166333098 277221830 415832745 637610209 831665490 1275220418 1912830627 3188051045 3825661254 6376102090 9564153135 19128306270