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28110480 = 2435117127
BaseRepresentation
bin110101100111…
…0111010010000
31221220011022220
41223032322100
524144013410
62442301040
7460635516
oct153167220
957804286
1028110480
111495a902
1294b7780
135a92c28
143a3a4b6
152704070
hex1acee90

28110480 has 40 divisors (see below), whose sum is σ = 87143232. Its totient is φ = 7496064.

The previous prime is 28110479. The next prime is 28110517. The reversal of 28110480 is 8401182.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 28110480.

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, 58324 + ... + 58803.

Almost surely, 228110480 is an apocalyptic number.

28110480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28110480 is an abundant number, since it is smaller than the sum of its proper divisors (59032752).

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

28110480 is a wasteful number, since it uses less digits than its factorization.

28110480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117143 (or 117137 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 28110480 is about 5301.9317234382. The cubic root of 28110480 is about 304.0577568008.

The spelling of 28110480 in words is "twenty-eight million, one hundred ten thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 117127 234254 351381 468508 585635 702762 937016 1171270 1405524 1756905 1874032 2342540 2811048 3513810 4685080 5622096 7027620 9370160 14055240 28110480