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28368000 = 273253197
BaseRepresentation
bin110110000110…
…1110010000000
31222101020120200
41230031302000
524230234000
62452005200
7463060353
oct154156200
958336520
1028368000
1115016331
129600800
135b531cb
143aa629a
152755500
hex1b0dc80

28368000 has 192 divisors, whose sum is σ = 102393720. Its totient is φ = 7526400.

The previous prime is 28367981. The next prime is 28368029. The reversal of 28368000 is 86382.

It can be written as a sum of positive squares in 4 ways, for example, as 17239104 + 11128896 = 4152^2 + 3336^2 .

It is a tau number, because it is divible by the number of its divisors (192).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143902 + ... + 144098.

Almost surely, 228368000 is an apocalyptic number.

28368000 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 28368000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51196860).

28368000 is an abundant number, since it is smaller than the sum of its proper divisors (74025720).

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

28368000 is a wasteful number, since it uses less digits than its factorization.

28368000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 28368000 is about 5326.1618450813. The cubic root of 28368000 is about 304.9834264935.

The spelling of 28368000 in words is "twenty-eight million, three hundred sixty-eight thousand".