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28094886288 = 243577379179
BaseRepresentation
bin11010001010100101…
…011111000110010000
32200111222111002200000
4122022211133012100
5430014242330123
620523454530000
72013134410320
oct321245370620
980458432600
1028094886288
1110a07915997
125540b06900
132859790a91
14150740d280
15ae675ab43
hex68a95f190

28094886288 has 480 divisors, whose sum is σ = 96193843200. Its totient is φ = 7773262848.

The previous prime is 28094886283. The next prime is 28094886293. The reversal of 28094886288 is 88268849082.

It is an interprime number because it is at equal distance from previous prime (28094886283) and next prime (28094886293).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (28094886283) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 156954583 + ... + 156954761.

It is an arithmetic number, because the mean of its divisors is an integer number (200403840).

Almost surely, 228094886288 is an apocalyptic number.

28094886288 is a gapful number since it is divisible by the number (28) 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 28094886288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48096921600).

28094886288 is an abundant number, since it is smaller than the sum of its proper divisors (68098956912).

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

28094886288 is a wasteful number, since it uses less digits than its factorization.

28094886288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 28311552, while the sum is 63.

It can be divided in two parts, 280948 and 86288, that added together give a square (367236 = 6062).

The spelling of 28094886288 in words is "twenty-eight billion, ninety-four million, eight hundred eighty-six thousand, two hundred eighty-eight".