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28825359 = 39608453
BaseRepresentation
bin110110111110…
…1011100001111
32000020110221220
41231331130033
524334402414
62505454423
7500003643
oct155753417
960213856
1028825359
11152a8a12
1297a1413
135c83434
143b84c23
1527e5ca9
hex1b7d70f

28825359 has 4 divisors (see below), whose sum is σ = 38433816. Its totient is φ = 19216904.

The previous prime is 28825339. The next prime is 28825397. The reversal of 28825359 is 95352882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28825359 - 25 = 28825327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28825359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28825309) 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 3 ways as a sum of consecutive naturals, for example, 4804224 + ... + 4804229.

It is an arithmetic number, because the mean of its divisors is an integer number (9608454).

Almost surely, 228825359 is an apocalyptic number.

28825359 is a deficient number, since it is larger than the sum of its proper divisors (9608457).

28825359 is an equidigital number, since it uses as much as digits as its factorization.

28825359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9608456.

The product of its digits is 172800, while the sum is 42.

The square root of 28825359 is about 5368.9253114567. The cubic root of 28825359 is about 306.6137134204.

The spelling of 28825359 in words is "twenty-eight million, eight hundred twenty-five thousand, three hundred fifty-nine".

Divisors: 1 3 9608453 28825359