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28002060 = 22325179151
BaseRepresentation
bin110101011010…
…0011100001100
31221200122121100
41222310130030
524132031220
62440103100
7460004442
oct152643414
957618540
1028002060
11148963a9
129464a90
135a55788
143a0cb92
1526d1d90
hex1ab470c

28002060 has 72 divisors (see below), whose sum is σ = 89945856. Its totient is φ = 7027200.

The previous prime is 28002041. The next prime is 28002071. The reversal of 28002060 is 6020082.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1516 + ... + 7635.

It is an arithmetic number, because the mean of its divisors is an integer number (1249248).

Almost surely, 228002060 is an apocalyptic number.

28002060 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 28002060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44972928).

28002060 is an abundant number, since it is smaller than the sum of its proper divisors (61943796).

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

28002060 is a wasteful number, since it uses less digits than its factorization.

28002060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183 (or 9178 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 28002060 is about 5291.6972702527. The cubic root of 28002060 is about 303.6663438779. Note that the first 3 decimals are identical.

The spelling of 28002060 in words is "twenty-eight million, two thousand, sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 17 18 20 30 34 36 45 51 60 68 85 90 102 153 170 180 204 255 306 340 510 612 765 1020 1530 3060 9151 18302 27453 36604 45755 54906 82359 91510 109812 137265 155567 164718 183020 274530 311134 329436 411795 466701 549060 622268 777835 823590 933402 1400103 1555670 1647180 1866804 2333505 2800206 3111340 4667010 5600412 7000515 9334020 14001030 28002060