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28076125 = 537112917
BaseRepresentation
bin110101100011…
…0100001011101
31221211102012111
41223012201131
524141414000
62441434021
7460433410
oct153064135
957742174
1028076125
1114937010
12949b911
135a803bc
143a2bb77
1526e8cba
hex1ac685d

28076125 has 32 divisors (see below), whose sum is σ = 43699968. Its totient is φ = 17496000.

The previous prime is 28076101. The next prime is 28076131. The reversal of 28076125 is 52167082.

It is not a de Polignac number, because 28076125 - 217 = 27945053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8167 + ... + 11083.

It is an arithmetic number, because the mean of its divisors is an integer number (1365624).

Almost surely, 228076125 is an apocalyptic number.

28076125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28076125 is a deficient number, since it is larger than the sum of its proper divisors (15623843).

28076125 is a wasteful number, since it uses less digits than its factorization.

28076125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950 (or 2940 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 28076125 is about 5298.6908760561. The cubic root of 28076125 is about 303.9338390474.

The spelling of 28076125 in words is "twenty-eight million, seventy-six thousand, one hundred twenty-five".

Divisors: 1 5 7 11 25 35 55 77 125 175 275 385 875 1375 1925 2917 9625 14585 20419 32087 72925 102095 160435 224609 364625 510475 802175 1123045 2552375 4010875 5615225 28076125