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28360301 = 171668253
BaseRepresentation
bin110110000101…
…1111001101101
31222100212000112
41230023321231
524230012201
62451505405
7463026044
oct154137155
958325015
1028360301
1115010572
1295b8265
135b4c858
143aa355b
1527530bb
hex1b0be6d

28360301 has 4 divisors (see below), whose sum is σ = 30028572. Its totient is φ = 26692032.

The previous prime is 28360291. The next prime is 28360313. The reversal of 28360301 is 10306382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10306382 = 25153191.

It can be written as a sum of positive squares in 2 ways, for example, as 24255625 + 4104676 = 4925^2 + 2026^2 .

It is a cyclic number.

It is not a de Polignac number, because 28360301 - 210 = 28359277 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 (28360351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834110 + ... + 834143.

It is an arithmetic number, because the mean of its divisors is an integer number (7507143).

Almost surely, 228360301 is an apocalyptic number.

It is an amenable number.

28360301 is a deficient number, since it is larger than the sum of its proper divisors (1668271).

28360301 is a wasteful number, since it uses less digits than its factorization.

28360301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668270.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 28360301 is about 5325.4390429335. The cubic root of 28360301 is about 304.9558334326.

Adding to 28360301 its reverse (10306382), we get a palindrome (38666683).

The spelling of 28360301 in words is "twenty-eight million, three hundred sixty thousand, three hundred one".

Divisors: 1 17 1668253 28360301