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18730433060 = 2251757196479
BaseRepresentation
bin10001011100011010…
…111011101000100100
31210100100121120210222
4101130122323220210
5301324442324220
612334334103512
71232105024363
oct213432735044
953310546728
1018730433060
117a41928649
12376894ab98
1319c6666ab1
14c998477da
1574958ce25
hex45c6bba24

18730433060 has 48 divisors (see below), whose sum is σ = 41721039360. Its totient is φ = 7039034880.

The previous prime is 18730433047. The next prime is 18730433069. The reversal of 18730433060 is 6033403781.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18730433060.

It is not an unprimeable number, because it can be changed into a prime (18730433069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145901 + ... + 242379.

It is an arithmetic number, because the mean of its divisors is an integer number (869188320).

Almost surely, 218730433060 is an apocalyptic number.

18730433060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18730433060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20860519680).

18730433060 is an abundant number, since it is smaller than the sum of its proper divisors (22990606300).

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

18730433060 is a wasteful number, since it uses less digits than its factorization.

18730433060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97076 (or 97074 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 18730433060 in words is "eighteen billion, seven hundred thirty million, four hundred thirty-three thousand, sixty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 571 1142 2284 2855 5710 9707 11420 19414 38828 48535 96479 97070 192958 194140 385916 482395 964790 1640143 1929580 3280286 6560572 8200715 16401430 32802860 55089509 110179018 220358036 275447545 550895090 936521653 1101790180 1873043306 3746086612 4682608265 9365216530 18730433060