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28846825 = 527164839
BaseRepresentation
bin110111000001…
…0101011101001
32000021120101221
41232002223221
524341044300
62510142041
7500123350
oct156025351
960246357
1028846825
1115313057
1297b1921
135c90137
143b8c997
1527ec31a
hex1b82ae9

28846825 has 12 divisors (see below), whose sum is σ = 40880320. Its totient is φ = 19780560.

The previous prime is 28846823. The next prime is 28846837. The reversal of 28846825 is 52864882.

It is not a de Polignac number, because 28846825 - 21 = 28846823 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28846823) 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 11 ways as a sum of consecutive naturals, for example, 82245 + ... + 82594.

Almost surely, 228846825 is an apocalyptic number.

28846825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28846825 is a deficient number, since it is larger than the sum of its proper divisors (12033495).

28846825 is a wasteful number, since it uses less digits than its factorization.

28846825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164856 (or 164851 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 28846825 is about 5370.9240359551. The cubic root of 28846825 is about 306.6898054112.

The spelling of 28846825 in words is "twenty-eight million, eight hundred forty-six thousand, eight hundred twenty-five".

Divisors: 1 5 7 25 35 175 164839 824195 1153873 4120975 5769365 28846825