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28063129 = 532831871
BaseRepresentation
bin110101100001…
…1010110011001
31221210202101011
41223003112121
524141010004
62441253521
7460350463
oct153032631
957722334
1028063129
1114928276
1294942a1
135a77503
143a27133
1526e5004
hex1ac3599

28063129 has 8 divisors (see below), whose sum is σ = 28708992. Its totient is φ = 27421680.

The previous prime is 28063109. The next prime is 28063157. The reversal of 28063129 is 92136082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28063129 - 217 = 27932057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28063129.

It is not an unprimeable number, because it can be changed into a prime (28063109) 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 7 ways as a sum of consecutive naturals, for example, 14064 + ... + 15934.

It is an arithmetic number, because the mean of its divisors is an integer number (3588624).

Almost surely, 228063129 is an apocalyptic number.

It is an amenable number.

28063129 is a deficient number, since it is larger than the sum of its proper divisors (645863).

28063129 is a wasteful number, since it uses less digits than its factorization.

28063129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 28063129 is about 5297.4643934622. The cubic root of 28063129 is about 303.8869363999.

The spelling of 28063129 in words is "twenty-eight million, sixty-three thousand, one hundred twenty-nine".

Divisors: 1 53 283 1871 14999 99163 529493 28063129