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28214614 = 214107307
BaseRepresentation
bin110101110100…
…0010101010110
31222002110011201
41223220111112
524210331424
62444423114
7461551231
oct153502526
958073151
1028214614
1114a2106a
129547a9a
135acb44c
143a66418
152724d44
hex1ae8556

28214614 has 4 divisors (see below), whose sum is σ = 42321924. Its totient is φ = 14107306.

The previous prime is 28214591. The next prime is 28214633. The reversal of 28214614 is 41641282.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7053652 + ... + 7053655.

It is an arithmetic number, because the mean of its divisors is an integer number (10580481).

Almost surely, 228214614 is an apocalyptic number.

28214614 is a deficient number, since it is larger than the sum of its proper divisors (14107310).

28214614 is a wasteful number, since it uses less digits than its factorization.

28214614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14107309.

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

The square root of 28214614 is about 5311.7430284230. The cubic root of 28214614 is about 304.4327501956.

Adding to 28214614 its reverse (41641282), we get a palindrome (69855896).

The spelling of 28214614 in words is "twenty-eight million, two hundred fourteen thousand, six hundred fourteen".

Divisors: 1 2 14107307 28214614