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28823041 = 1317413181
BaseRepresentation
bin110110111110…
…0111000000001
32000020100210001
41231330320001
524334314131
62505440001
7466664122
oct155747001
960210701
1028823041
11152a71a5
1297a0001
135c82370
143b84049
1527e5261
hex1b7ce01

28823041 has 16 divisors (see below), whose sum is σ = 33678288. Its totient is φ = 24422400.

The previous prime is 28823021. The next prime is 28823051. The reversal of 28823041 is 14032882.

It can be written as a sum of positive squares in 8 ways, for example, as 8761600 + 20061441 = 2960^2 + 4479^2 .

It is a cyclic number.

It is not a de Polignac number, because 28823041 - 25 = 28823009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28823021) 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 15 ways as a sum of consecutive naturals, for example, 7471 + ... + 10651.

It is an arithmetic number, because the mean of its divisors is an integer number (2104893).

Almost surely, 228823041 is an apocalyptic number.

It is an amenable number.

28823041 is a deficient number, since it is larger than the sum of its proper divisors (4855247).

28823041 is a wasteful number, since it uses less digits than its factorization.

28823041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 28823041 is about 5368.7094352367. The cubic root of 28823041 is about 306.6054943885.

The spelling of 28823041 in words is "twenty-eight million, eight hundred twenty-three thousand, forty-one".

Divisors: 1 13 17 41 221 533 697 3181 9061 41353 54077 130421 703001 1695473 2217157 28823041