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28022914 = 214011457
BaseRepresentation
bin110101011100…
…1100010000010
31221201201012201
41222321202002
524133213124
62440343414
7460122313
oct152714202
957651181
1028022914
1114900037
129474b6a
135a6210a
143a1660a
1526d8144
hex1ab9882

28022914 has 4 divisors (see below), whose sum is σ = 42034374. Its totient is φ = 14011456.

The previous prime is 28022893. The next prime is 28022921. The reversal of 28022914 is 41922082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41922082 = 220961041.

It can be written as a sum of positive squares in only one way, i.e., 22420225 + 5602689 = 4735^2 + 2367^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7005727 + ... + 7005730.

Almost surely, 228022914 is an apocalyptic number.

28022914 is a deficient number, since it is larger than the sum of its proper divisors (14011460).

28022914 is a wasteful number, since it uses less digits than its factorization.

28022914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14011459.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28022914 is about 5293.6673488235. The cubic root of 28022914 is about 303.7417084111.

Adding to 28022914 its reverse (41922082), we get a palindrome (69944996).

The spelling of 28022914 in words is "twenty-eight million, twenty-two thousand, nine hundred fourteen".

Divisors: 1 2 14011457 28022914