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28901941 = 732831399
BaseRepresentation
bin110111001000…
…0001000110101
32000101101000021
41232100020311
524344330231
62511245141
7500443135
oct156201065
960341007
1028901941
1115350502
1298197b1
135cac253
143ba4ac5
15280d811
hex1b90235

28901941 has 8 divisors (see below), whose sum is σ = 29422400. Its totient is φ = 28384992.

The previous prime is 28901923. The next prime is 28901947. The reversal of 28901941 is 14910982.

28901941 = T303 + T304 + ... + T585.

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 28901941 - 215 = 28869173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28901897 and 28901906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28901947) 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, 19960 + ... + 21358.

It is an arithmetic number, because the mean of its divisors is an integer number (3677800).

Almost surely, 228901941 is an apocalyptic number.

It is an amenable number.

28901941 is a deficient number, since it is larger than the sum of its proper divisors (520459).

28901941 is a wasteful number, since it uses less digits than its factorization.

28901941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 28901941 is about 5376.0525481063. The cubic root of 28901941 is about 306.8850061100.

The spelling of 28901941 in words is "twenty-eight million, nine hundred one thousand, nine hundred forty-one".

Divisors: 1 73 283 1399 20659 102127 395917 28901941