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38388168000 = 263553721331
BaseRepresentation
bin100011110000000111…
…001111010101000000
310200002100002222200000
4203300013033111000
51112104332334000
625345115400000
72526203021100
oct436007172500
9120070088600
1038388168000
111530a135886
127534153000
13380a166110
141c024b7200
15eea24c000
hex8f01cf540

38388168000 has 2016 divisors, whose sum is σ = 184154600448. Its totient is φ = 7838208000.

The previous prime is 38388167947. The next prime is 38388168001. The reversal of 38388168000 is 86188383.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38388168001) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1238327985 + ... + 1238328015.

It is an arithmetic number, because the mean of its divisors is an integer number (91346528).

Almost surely, 238388168000 is an apocalyptic number.

38388168000 is a gapful number since it is divisible by the number (30) 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 38388168000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92077300224).

38388168000 is an abundant number, since it is smaller than the sum of its proper divisors (145766432448).

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

38388168000 is a wasteful number, since it uses less digits than its factorization.

38388168000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 38388168000 in words is "thirty-eight billion, three hundred eighty-eight million, one hundred sixty-eight thousand".