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28063033 = 81134603
BaseRepresentation
bin110101100001…
…1010100111001
31221210202020121
41223003110321
524141004113
62441253241
7460350265
oct153032471
957722217
1028063033
1114928199
129494221
135a7745b
143a270a5
1526e4e8d
hex1ac3539

28063033 has 4 divisors (see below), whose sum is σ = 28098448. Its totient is φ = 28027620.

The previous prime is 28063003. The next prime is 28063037. The reversal of 28063033 is 33036082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28063033 - 213 = 28054841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28062989 and 28063007.

It is not an unprimeable number, because it can be changed into a prime (28063037) 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 3 ways as a sum of consecutive naturals, for example, 16491 + ... + 18112.

It is an arithmetic number, because the mean of its divisors is an integer number (7024612).

Almost surely, 228063033 is an apocalyptic number.

It is an amenable number.

28063033 is a deficient number, since it is larger than the sum of its proper divisors (35415).

28063033 is an equidigital number, since it uses as much as digits as its factorization.

28063033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35414.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 28063033 is about 5297.4553325158. The cubic root of 28063033 is about 303.8865898814.

The spelling of 28063033 in words is "twenty-eight million, sixty-three thousand, thirty-three".

Divisors: 1 811 34603 28063033