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28200019488 = 25319315979107
BaseRepresentation
bin11010010000110110…
…100010011000100000
32200210022022102022020
4122100312202120200
5430223201110423
620542132141440
72015552132154
oct322066423040
980708272266
1028200019488
1110a611a3033
125570167880
1328754b0b84
141517379064
15b00ac64e3
hex690da2620

28200019488 has 384 divisors, whose sum is σ = 83607552000. Its totient is φ = 8286520320.

The previous prime is 28200019451. The next prime is 28200019511. The reversal of 28200019488 is 88491000282.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 263551531 + ... + 263551637.

It is an arithmetic number, because the mean of its divisors is an integer number (217728000).

Almost surely, 228200019488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28200019488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41803776000).

28200019488 is an abundant number, since it is smaller than the sum of its proper divisors (55407532512).

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

28200019488 is a wasteful number, since it uses less digits than its factorization.

28200019488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

It can be divided in two parts, 282000194 and 88, that added together give a palindrome (282000282).

The spelling of 28200019488 in words is "twenty-eight billion, two hundred million, nineteen thousand, four hundred eighty-eight".