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12388950000 = 24345571923
BaseRepresentation
bin10111000100111000…
…00101111111110000
31011222101222212110000
423202130011333300
5200333032400000
65405202110000
7616003223520
oct134234057760
934871885400
1012388950000
11528826a559
12249904b300
13122590765b
14857547680
154c79a0000
hex2e2705ff0

12388950000 has 1200 divisors, whose sum is σ = 56261399040. Its totient is φ = 2566080000.

The previous prime is 12388949999. The next prime is 12388950113. The reversal of 12388950000 is 5988321.

It is a tau number, because it is divible by the number of its divisors (1200).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 538649989 + ... + 538650011.

Almost surely, 212388950000 is an apocalyptic number.

12388950000 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 12388950000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28130699520).

12388950000 is an abundant number, since it is smaller than the sum of its proper divisors (43872449040).

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

12388950000 is an equidigital number, since it uses as much as digits as its factorization.

12388950000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

It can be divided in two parts, 123889 and 50000, that added together give a square (173889 = 4172).

The spelling of 12388950000 in words is "twelve billion, three hundred eighty-eight million, nine hundred fifty thousand".