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28680110 = 252868011
BaseRepresentation
bin110110101100…
…1111110101110
31222222002201022
41231121332232
524320230420
62502414142
7465530324
oct155317656
958862638
1028680110
1115209878
129731352
135c322a4
143b47d14
1527b7c25
hex1b59fae

28680110 has 8 divisors (see below), whose sum is σ = 51624216. Its totient is φ = 11472040.

The previous prime is 28680107. The next prime is 28680121. The reversal of 28680110 is 1108682.

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

It is a super-2 number, since 2×286801102 = 1645097419224200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28680110.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433996 + ... + 1434015.

It is an arithmetic number, because the mean of its divisors is an integer number (6453027).

Almost surely, 228680110 is an apocalyptic number.

28680110 is a deficient number, since it is larger than the sum of its proper divisors (22944106).

28680110 is a wasteful number, since it uses less digits than its factorization.

28680110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868018.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 28680110 is about 5355.3814056517. The cubic root of 28680110 is about 306.0978441718.

Adding to 28680110 its reverse (1108682), we get a palindrome (29788792).

The spelling of 28680110 in words is "twenty-eight million, six hundred eighty thousand, one hundred ten".

Divisors: 1 2 5 10 2868011 5736022 14340055 28680110