Search a number
-
+
19768698380 = 2257691285351
BaseRepresentation
bin10010011010010011…
…100110011000001100
31220000201021221002002
4102122103212120030
5310441241322010
613025343451432
71266613110104
oct223223463014
956021257062
1019768698380
118424a07762
1239b85b6b78
131b307b1082
14d576b6204
157aa7cc1a5
hex49a4e660c

19768698380 has 24 divisors (see below), whose sum is σ = 41568283680. Its totient is φ = 7897190400.

The previous prime is 19768698373. The next prime is 19768698401. The reversal of 19768698380 is 8389686791.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627296 + ... + 658055.

It is an arithmetic number, because the mean of its divisors is an integer number (1732011820).

Almost surely, 219768698380 is an apocalyptic number.

19768698380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19768698380 is an abundant number, since it is smaller than the sum of its proper divisors (21799585300).

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

19768698380 is a wasteful number, since it uses less digits than its factorization.

19768698380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286129 (or 1286127 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 65.

The spelling of 19768698380 in words is "nineteen billion, seven hundred sixty-eight million, six hundred ninety-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 769 1538 3076 3845 7690 15380 1285351 2570702 5141404 6426755 12853510 25707020 988434919 1976869838 3953739676 4942174595 9884349190 19768698380