Search a number
-
+
20430715160 = 235510767879
BaseRepresentation
bin10011000001110000…
…111111100100011000
31221201211222212101002
4103001300333210120
5313320230341120
613215153044132
71322202133142
oct230160774430
957654885332
1020430715160
118734673769
123b62256648
131c079b188b
14dbb5a3c92
157e899a375
hex4c1c3f918

20430715160 has 16 divisors (see below), whose sum is σ = 45969109200. Its totient is φ = 8172286048.

The previous prime is 20430715159. The next prime is 20430715169. The reversal of 20430715160 is 6151703402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430715169) 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, 255383900 + ... + 255383979.

It is an arithmetic number, because the mean of its divisors is an integer number (2873069325).

Almost surely, 220430715160 is an apocalyptic number.

20430715160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20430715160 is an abundant number, since it is smaller than the sum of its proper divisors (25538394040).

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

20430715160 is a wasteful number, since it uses less digits than its factorization.

20430715160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510767890 (or 510767886 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 20430715160 in words is "twenty billion, four hundred thirty million, seven hundred fifteen thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 510767879 1021535758 2043071516 2553839395 4086143032 5107678790 10215357580 20430715160