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28682255 = 57819493
BaseRepresentation
bin110110101101…
…0100000001111
31222222012122202
41231122200033
524320313010
62502432115
7465536510
oct155324017
958865582
1028682255
1115210448
12973263b
135c33264
143b48a07
1527b86a5
hex1b5a80f

28682255 has 8 divisors (see below), whose sum is σ = 39335712. Its totient is φ = 19667808.

The previous prime is 28682249. The next prime is 28682257. The reversal of 28682255 is 55228682.

It is a happy number.

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 28682255 - 24 = 28682239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28682257) 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 7 ways as a sum of consecutive naturals, for example, 409712 + ... + 409781.

It is an arithmetic number, because the mean of its divisors is an integer number (4916964).

Almost surely, 228682255 is an apocalyptic number.

28682255 is a deficient number, since it is larger than the sum of its proper divisors (10653457).

28682255 is an equidigital number, since it uses as much as digits as its factorization.

28682255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819505.

The product of its digits is 76800, while the sum is 38.

The square root of 28682255 is about 5355.5816677556. The cubic root of 28682255 is about 306.1054750526.

The spelling of 28682255 in words is "twenty-eight million, six hundred eighty-two thousand, two hundred fifty-five".

Divisors: 1 5 7 35 819493 4097465 5736451 28682255