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28488168 = 23322317203
BaseRepresentation
bin110110010101…
…1000111101000
31222121100102100
41230223013220
524243110133
62454333400
7464100612
oct154530750
958540370
1028488168
1115098645
12965a260
135b95b07
143ad7db2
15277ae13
hex1b2b1e8

28488168 has 48 divisors (see below), whose sum is σ = 80514720. Its totient is φ = 9082656.

The previous prime is 28488167. The next prime is 28488197. The reversal of 28488168 is 86188482.

It is a happy number.

28488168 is a `hidden beast` number, since 2 + 8 + 488 + 168 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28488167) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6946 + ... + 10257.

It is an arithmetic number, because the mean of its divisors is an integer number (1677390).

Almost surely, 228488168 is an apocalyptic number.

It is an amenable number.

28488168 is an abundant number, since it is smaller than the sum of its proper divisors (52026552).

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

28488168 is a wasteful number, since it uses less digits than its factorization.

28488168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17238 (or 17231 counting only the distinct ones).

The product of its digits is 196608, while the sum is 45.

The square root of 28488168 is about 5337.4308426433. The cubic root of 28488168 is about 305.4134605765.

The spelling of 28488168 in words is "twenty-eight million, four hundred eighty-eight thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 23 24 36 46 69 72 92 138 184 207 276 414 552 828 1656 17203 34406 51609 68812 103218 137624 154827 206436 309654 395669 412872 619308 791338 1187007 1238616 1582676 2374014 3165352 3561021 4748028 7122042 9496056 14244084 28488168