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28368001 = 67423403
BaseRepresentation
bin110110000110…
…1110010000001
31222101020120201
41230031302001
524230234001
62452005201
7463060354
oct154156201
958336521
1028368001
1115016332
129600801
135b531cc
143aa629b
152755501
hex1b0dc81

28368001 has 4 divisors (see below), whose sum is σ = 28791472. Its totient is φ = 27944532.

The previous prime is 28367981. The next prime is 28368029. The reversal of 28368001 is 10086382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28368001 - 29 = 28367489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28368601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211635 + ... + 211768.

It is an arithmetic number, because the mean of its divisors is an integer number (7197868).

Almost surely, 228368001 is an apocalyptic number.

It is an amenable number.

28368001 is a deficient number, since it is larger than the sum of its proper divisors (423471).

28368001 is an equidigital number, since it uses as much as digits as its factorization.

28368001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423470.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28368001 is about 5326.1619389575. The cubic root of 28368001 is about 304.9834300771.

The spelling of 28368001 in words is "twenty-eight million, three hundred sixty-eight thousand, one".

Divisors: 1 67 423403 28368001