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28879196 = 2213951941
BaseRepresentation
bin110111000101…
…0100101011100
32000100012210212
41232022211130
524343113241
62510551552
7500316623
oct156124534
960305725
1028879196
1115335405
1298085b8
135ca1aa8
143b9a6ba
152806beb
hex1b8a95c

28879196 has 12 divisors (see below), whose sum is σ = 50903160. Its totient is φ = 14335440.

The previous prime is 28879181. The next prime is 28879217. The reversal of 28879196 is 69197882.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 25415 + ... + 26526.

It is an arithmetic number, because the mean of its divisors is an integer number (4241930).

Almost surely, 228879196 is an apocalyptic number.

It is an amenable number.

28879196 is a deficient number, since it is larger than the sum of its proper divisors (22023964).

28879196 is a wasteful number, since it uses less digits than its factorization.

28879196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52084 (or 52082 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 28879196 is about 5373.9367320429. The cubic root of 28879196 is about 306.8044817453.

The spelling of 28879196 in words is "twenty-eight million, eight hundred seventy-nine thousand, one hundred ninety-six".

Divisors: 1 2 4 139 278 556 51941 103882 207764 7219799 14439598 28879196