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28860160 = 28573221
BaseRepresentation
bin110111000010…
…1111100000000
32000022020200211
41232011330000
524342011120
62510323504
7500210260
oct156057400
960266624
1028860160
111532207a
1297b9594
135c96224
143b937a0
15280125a
hex1b85f00

28860160 has 72 divisors (see below), whose sum is σ = 79029216. Its totient is φ = 9891840.

The previous prime is 28860157. The next prime is 28860173. The reversal of 28860160 is 6106882.

It is a congruent number.

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, 7350 + ... + 10570.

It is an arithmetic number, because the mean of its divisors is an integer number (1097628).

Almost surely, 228860160 is an apocalyptic number.

28860160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28860160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39514608).

28860160 is an abundant number, since it is smaller than the sum of its proper divisors (50169056).

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

28860160 is an equidigital number, since it uses as much as digits as its factorization.

28860160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3249 (or 3235 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 28860160 is about 5372.1652990205. The cubic root of 28860160 is about 306.7370558860.

The spelling of 28860160 in words is "twenty-eight million, eight hundred sixty thousand, one hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 448 560 640 896 1120 1280 1792 2240 3221 4480 6442 8960 12884 16105 22547 25768 32210 45094 51536 64420 90188 103072 112735 128840 180376 206144 225470 257680 360752 412288 450940 515360 721504 824576 901880 1030720 1443008 1803760 2061440 2886016 3607520 4122880 5772032 7215040 14430080 28860160