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28974335 = 5131929809
BaseRepresentation
bin110111010000…
…1110011111111
32000112001022112
41232201303333
524404134320
62513004235
7501164165
oct156416377
960461275
1028974335
111539a935
12985367b
1360061a0
143bc3235
152824ec5
hex1ba1cff

28974335 has 32 divisors (see below), whose sum is σ = 40824000. Its totient is φ = 19547136.

The previous prime is 28974317. The next prime is 28974343. The reversal of 28974335 is 53347982.

It is a cyclic number.

It is not a de Polignac number, because 28974335 - 28 = 28974079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28974292 and 28974301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35411 + ... + 36219.

It is an arithmetic number, because the mean of its divisors is an integer number (1275750).

Almost surely, 228974335 is an apocalyptic number.

28974335 is a deficient number, since it is larger than the sum of its proper divisors (11849665).

28974335 is a wasteful number, since it uses less digits than its factorization.

28974335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875.

The product of its digits is 181440, while the sum is 41.

The square root of 28974335 is about 5382.7813442495. The cubic root of 28974335 is about 307.1410224722.

The spelling of 28974335 in words is "twenty-eight million, nine hundred seventy-four thousand, three hundred thirty-five".

Divisors: 1 5 13 19 29 65 95 145 247 377 551 809 1235 1885 2755 4045 7163 10517 15371 23461 35815 52585 76855 117305 199823 304993 445759 999115 1524965 2228795 5794867 28974335