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28674841 = 134771661
BaseRepresentation
bin110110101100…
…0101100011001
31222221211111011
41231120230121
524320043331
62502333521
7465506056
oct155305431
958854434
1028674841
1115205918
12972a2a1
135c2ca80
143b4602d
1527b63b1
hex1b58b19

28674841 has 16 divisors (see below), whose sum is σ = 32030208. Its totient is φ = 25502400.

The previous prime is 28674839. The next prime is 28674847. The reversal of 28674841 is 14847682.

It is a cyclic number.

It is not a de Polignac number, because 28674841 - 21 = 28674839 is a prime.

It is a super-3 number, since 3×286748413 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28674794 and 28674803.

It is not an unprimeable number, because it can be changed into a prime (28674847) 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 15 ways as a sum of consecutive naturals, for example, 43051 + ... + 43711.

It is an arithmetic number, because the mean of its divisors is an integer number (2001888).

Almost surely, 228674841 is an apocalyptic number.

It is an amenable number.

28674841 is a deficient number, since it is larger than the sum of its proper divisors (3355367).

28674841 is a wasteful number, since it uses less digits than its factorization.

28674841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 86016, while the sum is 40.

The square root of 28674841 is about 5354.8894479718. The cubic root of 28674841 is about 306.0790979824.

The spelling of 28674841 in words is "twenty-eight million, six hundred seventy-four thousand, eight hundred forty-one".

Divisors: 1 13 47 71 611 661 923 3337 8593 31067 43381 46931 403871 610103 2205757 28674841