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28672119 = 3271992287
BaseRepresentation
bin110110101100…
…0000001110111
31222221200202100
41231120001313
524320001434
62502313143
7465465120
oct155300167
958850670
1028672119
1115203873
1297287b3
135c2b768
143b45047
1527b5699
hex1b58077

28672119 has 24 divisors (see below), whose sum is σ = 47590400. Its totient is φ = 16294608.

The previous prime is 28672109. The next prime is 28672139. The reversal of 28672119 is 91127682.

It is not a de Polignac number, because 28672119 - 24 = 28672103 is a prime.

It is a super-2 number, since 2×286721192 = 1644180815900322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28672109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11394 + ... + 13680.

Almost surely, 228672119 is an apocalyptic number.

28672119 is a deficient number, since it is larger than the sum of its proper divisors (18918281).

28672119 is a wasteful number, since it uses less digits than its factorization.

28672119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2496 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 28672119 is about 5354.6352816975. The cubic root of 28672119 is about 306.0694126783.

The spelling of 28672119 in words is "twenty-eight million, six hundred seventy-two thousand, one hundred nineteen".

Divisors: 1 3 7 9 21 63 199 597 1393 1791 2287 4179 6861 12537 16009 20583 48027 144081 455113 1365339 3185791 4096017 9557373 28672119