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28656301 = 269307347
BaseRepresentation
bin110110101010…
…0001010101101
31222220220001111
41231110022231
524314000201
62502112021
7465401032
oct155241255
958826044
1028656301
11151a29a3
12971b611
135c244bb
143b3d389
1527b0b51
hex1b542ad

28656301 has 8 divisors (see below), whose sum is σ = 28939680. Its totient is φ = 28374768.

The previous prime is 28656293. The next prime is 28656311. The reversal of 28656301 is 10365682.

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 28656301 - 23 = 28656293 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 (28656311) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 82410 + ... + 82756.

It is an arithmetic number, because the mean of its divisors is an integer number (3617460).

Almost surely, 228656301 is an apocalyptic number.

It is an amenable number.

28656301 is a deficient number, since it is larger than the sum of its proper divisors (283379).

28656301 is a wasteful number, since it uses less digits than its factorization.

28656301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28656301 is about 5353.1580398864. The cubic root of 28656301 is about 306.0131176116.

The spelling of 28656301 in words is "twenty-eight million, six hundred fifty-six thousand, three hundred one".

Divisors: 1 269 307 347 82583 93343 106529 28656301