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28315301 = 719212897
BaseRepresentation
bin110110000000…
…0111010100101
31222021120021212
41230000322211
524222042201
62450521205
7462450620
oct154007245
958246255
1028315301
1114a8a783
129596205
135b35221
143a90db7
152744abb
hex1b00ea5

28315301 has 8 divisors (see below), whose sum is σ = 34063680. Its totient is φ = 22992768.

The previous prime is 28315289. The next prime is 28315327. The reversal of 28315301 is 10351382.

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 28315301 - 26 = 28315237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28315361) 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, 106316 + ... + 106581.

It is an arithmetic number, because the mean of its divisors is an integer number (4257960).

Almost surely, 228315301 is an apocalyptic number.

It is an amenable number.

28315301 is a deficient number, since it is larger than the sum of its proper divisors (5748379).

28315301 is a wasteful number, since it uses less digits than its factorization.

28315301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212923.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 28315301 is about 5321.2123618589. The cubic root of 28315301 is about 304.7944543612.

Adding to 28315301 its reverse (10351382), we get a palindrome (38666683).

The spelling of 28315301 in words is "twenty-eight million, three hundred fifteen thousand, three hundred one".

Divisors: 1 7 19 133 212897 1490279 4045043 28315301