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28302560000 = 285411131237
BaseRepresentation
bin11010010110111101…
…101100101100000000
32201001110021000102222
4122112331230230000
5430430423410000
621000234030212
72021235535121
oct322675545400
981043230388
1028302560000
111100406a260
12559a578368
132890803b30
141526c2c048
15b09acda85
hex696f6cb00

28302560000 has 360 divisors, whose sum is σ = 83004542544. Its totient is φ = 9492480000.

The previous prime is 28302559991. The next prime is 28302560003. The reversal of 28302560000 is 6520382.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (28302560003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22879382 + ... + 22880618.

Almost surely, 228302560000 is an apocalyptic number.

28302560000 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 28302560000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41502271272).

28302560000 is an abundant number, since it is smaller than the sum of its proper divisors (54701982544).

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

28302560000 is a wasteful number, since it uses less digits than its factorization.

28302560000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 28302560000 in words is "twenty-eight billion, three hundred two million, five hundred sixty thousand".