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28839196 = 2256912671
BaseRepresentation
bin110111000000…
…0110100011100
32000021011221101
41232000310130
524340323241
62510042444
7500062201
oct156006434
960234841
1028839196
1115308351
1297a9424
135c89819
143b89ca8
1527e9e31
hex1b80d1c

28839196 has 12 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 14393120.

The previous prime is 28839179. The next prime is 28839199. The reversal of 28839196 is 69193882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28839199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4060 + ... + 8611.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 228839196 is an apocalyptic number.

28839196 is the 2871-st centered heptagonal number.

It is an amenable number.

28839196 is a deficient number, since it is larger than the sum of its proper divisors (21722084).

28839196 is a wasteful number, since it uses less digits than its factorization.

28839196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13244 (or 13242 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 28839196 is about 5370.2137760056. The cubic root of 28839196 is about 306.6627667011.

The spelling of 28839196 in words is "twenty-eight million, eight hundred thirty-nine thousand, one hundred ninety-six".

Divisors: 1 2 4 569 1138 2276 12671 25342 50684 7209799 14419598 28839196