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28067338 = 2133197359
BaseRepresentation
bin110101100010…
…0011000001010
31221210222011001
41223010120022
524141123323
62441325214
7460365655
oct153043012
957728131
1028067338
1114930452
12949680a
135a793c0
143a2889c
1526e63ad
hex1ac460a

28067338 has 32 divisors (see below), whose sum is σ = 47416320. Its totient is φ = 12372480.

The previous prime is 28067321. The next prime is 28067359. The reversal of 28067338 is 83376082.

It is a junction number, because it is equal to n+sod(n) for n = 28067297 and 28067306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78003 + ... + 78361.

It is an arithmetic number, because the mean of its divisors is an integer number (1481760).

Almost surely, 228067338 is an apocalyptic number.

28067338 is a deficient number, since it is larger than the sum of its proper divisors (19348982).

28067338 is a wasteful number, since it uses less digits than its factorization.

28067338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 28067338 is about 5297.8616440976. The cubic root of 28067338 is about 303.9021282931.

The spelling of 28067338 in words is "twenty-eight million, sixty-seven thousand, three hundred thirty-eight".

Divisors: 1 2 13 26 31 62 97 194 359 403 718 806 1261 2522 3007 4667 6014 9334 11129 22258 34823 39091 69646 78182 144677 289354 452699 905398 1079513 2159026 14033669 28067338