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28880202 = 23133710007
BaseRepresentation
bin110111000101…
…0110101001010
32000100021012010
41232022311022
524343131302
62511000350
7500322561
oct156126512
960307163
1028880202
111533613a
1298090b6
135ca23a0
143b9abd8
15280716c
hex1b8ad4a

28880202 has 32 divisors (see below), whose sum is σ = 63891072. Its totient is φ = 8645184.

The previous prime is 28880183. The next prime is 28880213. The reversal of 28880202 is 20208882.

It is a self number, because there is not a number n which added to its sum of digits gives 28880202.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2118 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (1996596).

Almost surely, 228880202 is an apocalyptic number.

28880202 is an abundant number, since it is smaller than the sum of its proper divisors (35010870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28880202 is a wasteful number, since it uses less digits than its factorization.

28880202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10062.

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 28880202 is about 5374.0303311388. The cubic root of 28880202 is about 306.8080441913.

The spelling of 28880202 in words is "twenty-eight million, eight hundred eighty thousand, two hundred two".

Divisors: 1 2 3 6 13 26 37 39 74 78 111 222 481 962 1443 2886 10007 20014 30021 60042 130091 260182 370259 390273 740518 780546 1110777 2221554 4813367 9626734 14440101 28880202