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28450033 = 317911617
BaseRepresentation
bin110110010000…
…1110011110001
31222112102002221
41230201303301
524240400113
62453441041
7463551463
oct154416361
958472087
1028450033
1115071a27
129640181
135b81651
143ac8133
15276e98d
hex1b21cf1

28450033 has 8 divisors (see below), whose sum is σ = 29742080. Its totient is φ = 27181440.

The previous prime is 28450031. The next prime is 28450067. The reversal of 28450033 is 33005482.

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

It is a cyclic number.

It is not a de Polignac number, because 28450033 - 21 = 28450031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28450031) 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 7 ways as a sum of consecutive naturals, for example, 3360 + ... + 8257.

It is an arithmetic number, because the mean of its divisors is an integer number (3717760).

Almost surely, 228450033 is an apocalyptic number.

It is an amenable number.

28450033 is a deficient number, since it is larger than the sum of its proper divisors (1292047).

28450033 is a wasteful number, since it uses less digits than its factorization.

28450033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11727.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 28450033 is about 5333.8572346849. The cubic root of 28450033 is about 305.2771215982.

The spelling of 28450033 in words is "twenty-eight million, four hundred fifty thousand, thirty-three".

Divisors: 1 31 79 2449 11617 360127 917743 28450033