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28955848 = 2319197967
BaseRepresentation
bin110111001110…
…1010011001000
32000111002221211
41232131103020
524403041343
62512342504
7501056245
oct156352310
960432854
1028955848
1115387a59
129844a34
135cca94c
143bba5cc
15281e79d
hex1b9d4c8

28955848 has 32 divisors (see below), whose sum is σ = 57499200. Its totient is φ = 13632192.

The previous prime is 28955831. The next prime is 28955851. The reversal of 28955848 is 84855982.

It is a super-3 number, since 3×289558483 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 7 ways as a sum of consecutive naturals, for example, 29461 + ... + 30427.

It is an arithmetic number, because the mean of its divisors is an integer number (1796850).

Almost surely, 228955848 is an apocalyptic number.

It is an amenable number.

28955848 is a deficient number, since it is larger than the sum of its proper divisors (28543352).

28955848 is a wasteful number, since it uses less digits than its factorization.

28955848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189 (or 1185 counting only the distinct ones).

The product of its digits is 921600, while the sum is 49.

The square root of 28955848 is about 5381.0638353396. The cubic root of 28955848 is about 307.0756850607.

The spelling of 28955848 in words is "twenty-eight million, nine hundred fifty-five thousand, eight hundred forty-eight".

Divisors: 1 2 4 8 19 38 76 152 197 394 788 967 1576 1934 3743 3868 7486 7736 14972 18373 29944 36746 73492 146984 190499 380998 761996 1523992 3619481 7238962 14477924 28955848