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12190886400 = 2935272111931
BaseRepresentation
bin10110101101010001…
…00010101000000000
31011110121022012021010
423112220202220000
5144431331331100
65333405000520
7611046552600
oct132650425000
934417265233
1012190886400
11519648a430
122442853140
1311c387a864
1483910ac00
154b53c9750
hex2d6a22a00

12190886400 has 1440 divisors, whose sum is σ = 55530731520. Its totient is φ = 2322432000.

The previous prime is 12190886399. The next prime is 12190886423. The reversal of 12190886400 is 468809121.

It is a super-2 number, since 2×121908864002 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 393254385 + ... + 393254415.

It is an arithmetic number, because the mean of its divisors is an integer number (38563008).

Almost surely, 212190886400 is an apocalyptic number.

12190886400 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 12190886400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27765365760).

12190886400 is an abundant number, since it is smaller than the sum of its proper divisors (43339845120).

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

12190886400 is a wasteful number, since it uses less digits than its factorization.

12190886400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 12190886400 in words is "twelve billion, one hundred ninety million, eight hundred eighty-six thousand, four hundred".