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28041845760 = 2103351091861
BaseRepresentation
bin11010000111011011…
…001001110000000000
32200101021200100202000
4122013123021300000
5424412203031020
620514322024000
72011621520235
oct320733116000
980337610660
1028041845760
111098a988845
1255271a8000
13284b7ac756
14150036378c
15ae1c80090
hex6876c9c00

28041845760 has 352 divisors, whose sum is σ = 100623969600. Its totient is φ = 7405240320.

The previous prime is 28041845759. The next prime is 28041845789. The reversal of 28041845760 is 6754814082.

It is a super-2 number, since 2×280418457602 (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15067230 + ... + 15069090.

It is an arithmetic number, because the mean of its divisors is an integer number (285863550).

Almost surely, 228041845760 is an apocalyptic number.

28041845760 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 28041845760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50311984800).

28041845760 is an abundant number, since it is smaller than the sum of its proper divisors (72582123840).

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

28041845760 is a wasteful number, since it uses less digits than its factorization.

28041845760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 28041845760 in words is "twenty-eight billion, forty-one million, eight hundred forty-five thousand, seven hundred sixty".