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18230190528 = 26311191493049
BaseRepresentation
bin10000111110100110…
…101010000111000000
31202001111022122001210
4100332212222013000
5244313412044103
612212544130120
71213522030344
oct207646520700
952044278053
1018230190528
117805515a70
123649306940
131946b284b4
14c4d22b624
1571a6c7e03
hex43e9aa1c0

18230190528 has 224 divisors, whose sum is σ = 55778400000. Its totient is φ = 5196718080.

The previous prime is 18230190479. The next prime is 18230190571. The reversal of 18230190528 is 82509103281.

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, 5977548 + ... + 5980596.

Almost surely, 218230190528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18230190528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27889200000).

18230190528 is an abundant number, since it is smaller than the sum of its proper divisors (37548209472).

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

18230190528 is a wasteful number, since it uses less digits than its factorization.

18230190528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243 (or 3233 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 18230190528 in words is "eighteen billion, two hundred thirty million, one hundred ninety thousand, five hundred twenty-eight".