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19014304430 = 2511298966973
BaseRepresentation
bin10001101101010101…
…110100001010101110
31211002010202202010102
4101231111310022232
5302420130220210
612422434311102
71242122630612
oct215525641256
954063682112
1019014304430
118078096390
123827a28492
131a40408614
14cc541d342
15764462ea5
hex46d5742ae

19014304430 has 64 divisors (see below), whose sum is σ = 39059236800. Its totient is φ = 6600760320.

The previous prime is 19014304427. The next prime is 19014304469. The reversal of 19014304430 is 3440341091.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19014304393 and 19014304402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250424 + ... + 317396.

It is an arithmetic number, because the mean of its divisors is an integer number (610300575).

Almost surely, 219014304430 is an apocalyptic number.

19014304430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19014304430 is an abundant number, since it is smaller than the sum of its proper divisors (20044932370).

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

19014304430 is a wasteful number, since it uses less digits than its factorization.

19014304430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67109.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 19014304430 in words is "nineteen billion, fourteen million, three hundred four thousand, four hundred thirty".

Divisors: 1 2 5 10 11 22 29 55 58 89 110 145 178 290 319 445 638 890 979 1595 1958 2581 3190 4895 5162 9790 12905 25810 28391 56782 66973 133946 141955 283910 334865 669730 736703 1473406 1942217 3683515 3884434 5960597 7367030 9711085 11921194 19422170 21364387 29802985 42728774 59605970 65566567 106821935 131133134 172857313 213643870 327832835 345714626 655665670 864286565 1728573130 1901430443 3802860886 9507152215 19014304430