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28800067 = 194335251
BaseRepresentation
bin110110111011…
…1010001000011
32000012012021011
41231313101003
524333100232
62505141351
7466540132
oct155672103
960165234
1028800067
1115290a0a
12978a857
135c74a7a
143b79919
1527dd547
hex1b77443

28800067 has 8 divisors (see below), whose sum is σ = 31021760. Its totient is φ = 26649000.

The previous prime is 28800059. The next prime is 28800073. The reversal of 28800067 is 76000882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28800067 - 23 = 28800059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28800007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16809 + ... + 18442.

It is an arithmetic number, because the mean of its divisors is an integer number (3877720).

Almost surely, 228800067 is an apocalyptic number.

28800067 is a deficient number, since it is larger than the sum of its proper divisors (2221693).

28800067 is a wasteful number, since it uses less digits than its factorization.

28800067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35313.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 28800067 is about 5366.5693883523. The cubic root of 28800067 is about 306.5240106551.

The spelling of 28800067 in words is "twenty-eight million, eight hundred thousand, sixty-seven".

Divisors: 1 19 43 817 35251 669769 1515793 28800067