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28141337 = 7219167181
BaseRepresentation
bin110101101011…
…0011100011001
31221221201122202
41223112130121
524201010322
62443055545
7461124500
oct153263431
957851582
1028141337
1114981004
1295115b5
135aa3ca3
143a47837
15270d292
hex1ad6719

28141337 has 24 divisors (see below), whose sum is σ = 34856640. Its totient is φ = 22589280.

The previous prime is 28141331. The next prime is 28141361. The reversal of 28141337 is 73314182.

It is not a de Polignac number, because 28141337 - 28 = 28141081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28141331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155387 + ... + 155567.

It is an arithmetic number, because the mean of its divisors is an integer number (1452360).

Almost surely, 228141337 is an apocalyptic number.

It is an amenable number.

28141337 is a deficient number, since it is larger than the sum of its proper divisors (6715303).

28141337 is a wasteful number, since it uses less digits than its factorization.

28141337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 374 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 28141337 is about 5304.8409024211. The cubic root of 28141337 is about 304.1689713051.

The spelling of 28141337 in words is "twenty-eight million, one hundred forty-one thousand, three hundred thirty-seven".

Divisors: 1 7 19 49 133 167 181 931 1169 1267 3173 3439 8183 8869 22211 24073 30227 155477 168511 211589 574313 1481123 4020191 28141337