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28901341 = 74128763
BaseRepresentation
bin110111000111…
…1111111011101
32000101100012001
41232033333131
524344320331
62511242301
7500441320
oct156177735
960340161
1028901341
1115350007
129819391
135cabbb1
143ba47b7
15280d561
hex1b8ffdd

28901341 has 4 divisors (see below), whose sum is σ = 33030112. Its totient is φ = 24772572.

The previous prime is 28901311. The next prime is 28901387. The reversal of 28901341 is 14310982.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28901341 - 29 = 28900829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28901311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2064375 + ... + 2064388.

It is an arithmetic number, because the mean of its divisors is an integer number (8257528).

Almost surely, 228901341 is an apocalyptic number.

It is an amenable number.

28901341 is a deficient number, since it is larger than the sum of its proper divisors (4128771).

28901341 is an equidigital number, since it uses as much as digits as its factorization.

28901341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128770.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 28901341 is about 5375.9967447907. The cubic root of 28901341 is about 306.8828824663.

The spelling of 28901341 in words is "twenty-eight million, nine hundred one thousand, three hundred forty-one".

Divisors: 1 7 4128763 28901341