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18428100000 = 25355195361
BaseRepresentation
bin10001001010011001…
…100111110110100000
31202120021201110211020
4101022121213312200
5300220043200000
612244334045440
71221444160032
oct211231476640
952507643736
1018428100000
1178a7200312
1236a3649880
131978b300ab
14c6b627c52
1572cc6cba0
hex44a667da0

18428100000 has 576 divisors, whose sum is σ = 65909531520. Its totient is φ = 4492800000.

The previous prime is 18428099993. The next prime is 18428100013. The reversal of 18428100000 is 182481.

It is a super-2 number, since 2×184281000002 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 302099970 + ... + 302100030.

It is an arithmetic number, because the mean of its divisors is an integer number (114426270).

Almost surely, 218428100000 is an apocalyptic number.

18428100000 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 18428100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32954765760).

18428100000 is an abundant number, since it is smaller than the sum of its proper divisors (47481431520).

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

18428100000 is an equidigital number, since it uses as much as digits as its factorization.

18428100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 18428100000 its reverse (182481), we get a palindrome (18428282481).

The spelling of 18428100000 in words is "eighteen billion, four hundred twenty-eight million, one hundred thousand".