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28946960 = 245751691
BaseRepresentation
bin110111001101…
…1001000010000
32000110122202122
41232123020100
524402300320
62512233412
7501021320
oct156331020
960418678
1028946960
1115381309
12983b868
135cc68a3
143bb7280
15281bd25
hex1b9b210

28946960 has 40 divisors (see below), whose sum is σ = 76917696. Its totient is φ = 9924480.

The previous prime is 28946941. The next prime is 28946977. The reversal of 28946960 is 6964982.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25286 + ... + 26405.

Almost surely, 228946960 is an apocalyptic number.

28946960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28946960 is an abundant number, since it is smaller than the sum of its proper divisors (47970736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28946960 is a wasteful number, since it uses less digits than its factorization.

28946960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51711 (or 51705 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 28946960 is about 5380.2379129552. The cubic root of 28946960 is about 307.0442628763.

The spelling of 28946960 in words is "twenty-eight million, nine hundred forty-six thousand, nine hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 51691 103382 206764 258455 361837 413528 516910 723674 827056 1033820 1447348 1809185 2067640 2894696 3618370 4135280 5789392 7236740 14473480 28946960