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28898452800 = 26325271979191
BaseRepresentation
bin11010111010011110…
…110110010101000000
32202120222112111200200
4122322132312111000
5433141000442200
621135322045200
72042062536660
oct327236662500
982528474620
1028898452800
111128a472348
125726049800
1329570c2119
1415820261a0
15b42089800
hex6ba7b6540

28898452800 has 1008 divisors, whose sum is σ = 125782425600. Its totient is φ = 6146150400.

The previous prime is 28898452783. The next prime is 28898452837. The reversal of 28898452800 is 825489882.

It is a happy number.

28898452800 is a `hidden beast` number, since 28 + 8 + 98 + 4 + 528 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 151300705 + ... + 151300895.

Almost surely, 228898452800 is an apocalyptic number.

28898452800 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 28898452800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62891212800).

28898452800 is an abundant number, since it is smaller than the sum of its proper divisors (96883972800).

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

28898452800 is a wasteful number, since it uses less digits than its factorization.

28898452800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 54.

The spelling of 28898452800 in words is "twenty-eight billion, eight hundred ninety-eight million, four hundred fifty-two thousand, eight hundred".