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28074235 = 57802121
BaseRepresentation
bin110101100011…
…0000011111011
31221211022121111
41223012003323
524141333420
62441421151
7460425040
oct153060373
957738544
1028074235
1114935652
12949a7b7
135a7c597
143a2b1c7
1526e845a
hex1ac60fb

28074235 has 8 divisors (see below), whose sum is σ = 38501856. Its totient is φ = 19250880.

The previous prime is 28074223. The next prime is 28074271. The reversal of 28074235 is 53247082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28074235 - 27 = 28074107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28074197 and 28074206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401026 + ... + 401095.

It is an arithmetic number, because the mean of its divisors is an integer number (4812732).

Almost surely, 228074235 is an apocalyptic number.

28074235 is a deficient number, since it is larger than the sum of its proper divisors (10427621).

28074235 is an equidigital number, since it uses as much as digits as its factorization.

28074235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802133.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 28074235 is about 5298.5125271155. The cubic root of 28074235 is about 303.9270189248.

The spelling of 28074235 in words is "twenty-eight million, seventy-four thousand, two hundred thirty-five".

Divisors: 1 5 7 35 802121 4010605 5614847 28074235