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28829860 = 2252515743
BaseRepresentation
bin110110111111…
…0100010100100
32000020201010121
41231332202210
524340023420
62505531324
7500023033
oct155764244
960221117
1028829860
1115301334
1297a3b44
135c854b7
143b8671a
1527e72aa
hex1b7e8a4

28829860 has 24 divisors (see below), whose sum is σ = 60794496. Its totient is φ = 11484000.

The previous prime is 28829849. The next prime is 28829873. The reversal of 28829860 is 6892882.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2149 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (2533104).

Almost surely, 228829860 is an apocalyptic number.

28829860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28829860 is an abundant number, since it is smaller than the sum of its proper divisors (31964636).

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

28829860 is a wasteful number, since it uses less digits than its factorization.

28829860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003 (or 6001 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 28829860 is about 5369.3444665061. The cubic root of 28829860 is about 306.6296715507.

The spelling of 28829860 in words is "twenty-eight million, eight hundred twenty-nine thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 251 502 1004 1255 2510 5020 5743 11486 22972 28715 57430 114860 1441493 2882986 5765972 7207465 14414930 28829860