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28330676 = 2211643879
BaseRepresentation
bin110110000010…
…0101010110100
31222022100101022
41230010222310
524223040201
62451120312
7462543503
oct154045264
958270338
1028330676
1114aa0290
1295a3098
135b3c21a
143a9683a
15274941b
hex1b04ab4

28330676 has 12 divisors (see below), whose sum is σ = 54085920. Its totient is φ = 12877560.

The previous prime is 28330669. The next prime is 28330681. The reversal of 28330676 is 67603382.

It is a congruent number.

It is an unprimeable number.

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, 321896 + ... + 321983.

It is an arithmetic number, because the mean of its divisors is an integer number (4507160).

Almost surely, 228330676 is an apocalyptic number.

It is an amenable number.

28330676 is a deficient number, since it is larger than the sum of its proper divisors (25755244).

28330676 is a wasteful number, since it uses less digits than its factorization.

28330676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643894 (or 643892 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 28330676 is about 5322.6568553684. The cubic root of 28330676 is about 304.8496114274.

It can be divided in two parts, 283306 and 76, that added together give a palindrome (283382).

The spelling of 28330676 in words is "twenty-eight million, three hundred thirty thousand, six hundred seventy-six".

Divisors: 1 2 4 11 22 44 643879 1287758 2575516 7082669 14165338 28330676