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28285041 = 313017247
BaseRepresentation
bin110101111100…
…1100001110001
31222020000210010
41223321201301
524220110131
62450125133
7462263451
oct153714161
958200703
1028285041
1114a69a74
1295807a9
135b24515
143a83d61
15273ab46
hex1af9871

28285041 has 8 divisors (see below), whose sum is σ = 37747584. Its totient is φ = 18839600.

The previous prime is 28285031. The next prime is 28285069. The reversal of 28285041 is 14058282.

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 28285041 - 217 = 28153969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28285021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280 + ... + 7526.

It is an arithmetic number, because the mean of its divisors is an integer number (4718448).

Almost surely, 228285041 is an apocalyptic number.

It is an amenable number.

28285041 is a deficient number, since it is larger than the sum of its proper divisors (9462543).

28285041 is a wasteful number, since it uses less digits than its factorization.

28285041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 28285041 is about 5318.3682647970. The cubic root of 28285041 is about 304.6858397332.

The spelling of 28285041 in words is "twenty-eight million, two hundred eighty-five thousand, forty-one".

Divisors: 1 3 1301 3903 7247 21741 9428347 28285041