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28203041 = 97479607
BaseRepresentation
bin110101110010…
…1100000100001
31222001212022002
41223211200201
524204444131
62444253345
7461502416
oct153454041
958055262
1028203041
1114a133a9
129541255
135ac60b9
143a6210d
1527216cb
hex1ae5821

28203041 has 8 divisors (see below), whose sum is σ = 28600320. Its totient is φ = 27808128.

The previous prime is 28203031. The next prime is 28203053. The reversal of 28203041 is 14030282.

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 28203041 - 218 = 27940897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28203001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46160 + ... + 46766.

It is an arithmetic number, because the mean of its divisors is an integer number (3575040).

Almost surely, 228203041 is an apocalyptic number.

It is an amenable number.

28203041 is a deficient number, since it is larger than the sum of its proper divisors (397279).

28203041 is an equidigital number, since it uses as much as digits as its factorization.

28203041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 28203041 is about 5310.6535379367. The cubic root of 28203041 is about 304.3911206812.

The spelling of 28203041 in words is "twenty-eight million, two hundred three thousand, forty-one".

Divisors: 1 97 479 607 46463 58879 290753 28203041