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28194936000 = 2635371121973
BaseRepresentation
bin11010010000100011…
…001001010011000000
32200202221202011001220
4122100203021103000
5430220400423000
620541431155040
72015461000410
oct322043112300
980687664056
1028194936000
1110a59340800
12556a515a80
1328744210aa
141516814640
15b004201a0
hex6908c94c0

28194936000 has 1344 divisors, whose sum is σ = 124793410560. Its totient is φ = 5474304000.

The previous prime is 28194935983. The next prime is 28194936001. The reversal of 28194936000 is 63949182.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28194936001) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 386231964 + ... + 386232036.

It is an arithmetic number, because the mean of its divisors is an integer number (92852240).

Almost surely, 228194936000 is an apocalyptic number.

28194936000 is a gapful number since it is divisible by the number (20) 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 28194936000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62396705280).

28194936000 is an abundant number, since it is smaller than the sum of its proper divisors (96598474560).

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

28194936000 is a wasteful number, since it uses less digits than its factorization.

28194936000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 28194936000 in words is "twenty-eight billion, one hundred ninety-four million, nine hundred thirty-six thousand".