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28445056000 = 21053297997
BaseRepresentation
bin11010011111011101…
…010001110000000000
32201102101101120012121
4122133131101300000
5431223413243000
621022324134024
72024615662264
oct323735216000
981371346177
1028445056000
1111077546649
12561a237314
1328b41a62aa
14153bb220a4
15b17379b1a
hex69f751c00

28445056000 has 352 divisors, whose sum is σ = 75106886400. Its totient is φ = 10734796800.

The previous prime is 28445055931. The next prime is 28445056007. The reversal of 28445056000 is 65054482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28445056007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293247952 + ... + 293248048.

Almost surely, 228445056000 is an apocalyptic number.

28445056000 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 28445056000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37553443200).

28445056000 is an abundant number, since it is smaller than the sum of its proper divisors (46661830400).

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

28445056000 is an equidigital number, since it uses as much as digits as its factorization.

28445056000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 28445056000 in words is "twenty-eight billion, four hundred forty-five million, fifty-six thousand".