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28027160 = 2357199503
BaseRepresentation
bin110101011101…
…0100100011000
31221201221000222
41222322210120
524133332120
62440415212
7460140560
oct152724430
957657028
1028027160
1114903247
129477508
135a64025
143a17da0
1526d9525
hex1aba918

28027160 has 64 divisors (see below), whose sum is σ = 72576000. Its totient is φ = 9542016.

The previous prime is 28027159. The next prime is 28027163. The reversal of 28027160 is 6172082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28027163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55469 + ... + 55971.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 228027160 is an apocalyptic number.

28027160 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 28027160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36288000).

28027160 is an abundant number, since it is smaller than the sum of its proper divisors (44548840).

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

28027160 is a wasteful number, since it uses less digits than its factorization.

28027160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 28027160 is about 5294.0683788557. The cubic root of 28027160 is about 303.7570485022.

The spelling of 28027160 in words is "twenty-eight million, twenty-seven thousand, one hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 199 280 398 503 796 995 1006 1393 1592 1990 2012 2515 2786 3521 3980 4024 5030 5572 6965 7042 7960 10060 11144 13930 14084 17605 20120 27860 28168 35210 55720 70420 100097 140840 200194 400388 500485 700679 800776 1000970 1401358 2001940 2802716 3503395 4003880 5605432 7006790 14013580 28027160