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28895461 = 717242819
BaseRepresentation
bin110111000111…
…0100011100101
32000101001010021
41232032203211
524344123321
62511155141
7500415220
oct156164345
960331107
1028895461
1115346651
129815ab1
135ca930a
143ba25b7
15280b941
hex1b8e8e5

28895461 has 8 divisors (see below), whose sum is σ = 34966080. Its totient is φ = 23310528.

The previous prime is 28895453. The next prime is 28895473. The reversal of 28895461 is 16459882.

It is a happy number.

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 28895461 - 23 = 28895453 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 (28895401) 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, 121291 + ... + 121528.

It is an arithmetic number, because the mean of its divisors is an integer number (4370760).

Almost surely, 228895461 is an apocalyptic number.

It is an amenable number.

28895461 is a deficient number, since it is larger than the sum of its proper divisors (6070619).

28895461 is a wasteful number, since it uses less digits than its factorization.

28895461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242843.

The product of its digits is 138240, while the sum is 43.

The square root of 28895461 is about 5375.4498416412. The cubic root of 28895461 is about 306.8620692021.

The spelling of 28895461 in words is "twenty-eight million, eight hundred ninety-five thousand, four hundred sixty-one".

Divisors: 1 7 17 119 242819 1699733 4127923 28895461