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28880160 = 253560167
BaseRepresentation
bin110111000101…
…0110100100000
32000100021010120
41232022310200
524343131120
62511000240
7500322501
oct156126440
960307116
1028880160
1115336101
129809080
135ca236a
143b9aba8
152807140
hex1b8ad20

28880160 has 48 divisors (see below), whose sum is σ = 90974016. Its totient is φ = 7701248.

The previous prime is 28880153. The next prime is 28880167. The reversal of 28880160 is 6108882.

It is an interprime number because it is at equal distance from previous prime (28880153) and next prime (28880167).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (28880167) by changing a digit.

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, 29604 + ... + 30563.

It is an arithmetic number, because the mean of its divisors is an integer number (1895292).

Almost surely, 228880160 is an apocalyptic number.

28880160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28880160 is an abundant number, since it is smaller than the sum of its proper divisors (62093856).

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

28880160 is a wasteful number, since it uses less digits than its factorization.

28880160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60185 (or 60177 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 28880160 is about 5374.0264234557. The cubic root of 28880160 is about 306.8078954626.

The spelling of 28880160 in words is "twenty-eight million, eight hundred eighty thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 60167 120334 180501 240668 300835 361002 481336 601670 722004 902505 962672 1203340 1444008 1805010 1925344 2406680 2888016 3610020 4813360 5776032 7220040 9626720 14440080 28880160