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28368379 = 133170393
BaseRepresentation
bin110110000110…
…1110111111011
31222101021002201
41230031313323
524230242004
62452011031
7463061434
oct154156773
958337081
1028368379
1115016646
129600a77
135b53430
143aa648b
1527556a4
hex1b0ddfb

28368379 has 8 divisors (see below), whose sum is σ = 31536512. Its totient is φ = 25341120.

The previous prime is 28368343. The next prime is 28368419. The reversal of 28368379 is 97386382.

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 28368379 - 27 = 28368251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28368079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34794 + ... + 35599.

It is an arithmetic number, because the mean of its divisors is an integer number (3942064).

Almost surely, 228368379 is an apocalyptic number.

28368379 is a deficient number, since it is larger than the sum of its proper divisors (3168133).

28368379 is a wasteful number, since it uses less digits than its factorization.

28368379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70437.

The product of its digits is 435456, while the sum is 46.

The square root of 28368379 is about 5326.1974240541. The cubic root of 28368379 is about 304.9847846929.

The spelling of 28368379 in words is "twenty-eight million, three hundred sixty-eight thousand, three hundred seventy-nine".

Divisors: 1 13 31 403 70393 915109 2182183 28368379