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28093636 = 2267104827
BaseRepresentation
bin110101100101…
…0110011000100
31221212022020001
41223022303010
524142444021
62442051044
7460535434
oct153126304
957768201
1028093636
111494918a
1294a9a84
135a8836c
143a342c4
1526ee091
hex1acacc4

28093636 has 12 divisors (see below), whose sum is σ = 49898128. Its totient is φ = 13837032.

The previous prime is 28093633. The next prime is 28093661. The reversal of 28093636 is 63639082.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28093595 and 28093604.

It is not an unprimeable number, because it can be changed into a prime (28093633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52146 + ... + 52681.

Almost surely, 228093636 is an apocalyptic number.

It is an amenable number.

28093636 is a deficient number, since it is larger than the sum of its proper divisors (21804492).

28093636 is a wasteful number, since it uses less digits than its factorization.

28093636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104898 (or 104896 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 28093636 is about 5300.3430077685. The cubic root of 28093636 is about 303.9970134748.

The spelling of 28093636 in words is "twenty-eight million, ninety-three thousand, six hundred thirty-six".

Divisors: 1 2 4 67 134 268 104827 209654 419308 7023409 14046818 28093636