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18023060 = 22511176179
BaseRepresentation
bin100010011000…
…0001010010100
31020220122222202
41010300022110
514103214220
61442144032
7306123236
oct104601224
936818882
1018023060
11a19aaa0
126052018
133970643
142572256
1518b0275
hex1130294

18023060 has 96 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 5990400.

The previous prime is 18023051. The next prime is 18023069. The reversal of 18023060 is 6032081.

It is an interprime number because it is at equal distance from previous prime (18023051) and next prime (18023069).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18023069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228101 + ... + 228179.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 218023060 is an apocalyptic number.

18023060 is a gapful number since it is divisible by the number (10) 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 18023060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22498560).

18023060 is an abundant number, since it is smaller than the sum of its proper divisors (26974060).

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

18023060 is a wasteful number, since it uses less digits than its factorization.

18023060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 18023060 is about 4245.3574643368. The cubic root of 18023060 is about 262.1860070269.

18023060 divided by its sum of digits (20) gives a triangular number (901153 = T1342).

The spelling of 18023060 in words is "eighteen million, twenty-three thousand, sixty".

Divisors: 1 2 4 5 10 11 17 20 22 34 44 55 61 68 79 85 110 122 158 170 187 220 244 305 316 340 374 395 610 671 748 790 869 935 1037 1220 1342 1343 1580 1738 1870 2074 2684 2686 3355 3476 3740 4148 4345 4819 5185 5372 6710 6715 8690 9638 10370 11407 13420 13430 14773 17380 19276 20740 22814 24095 26860 29546 45628 48190 53009 57035 59092 73865 81923 96380 106018 114070 147730 163846 212036 228140 265045 295460 327692 409615 530090 819230 901153 1060180 1638460 1802306 3604612 4505765 9011530 18023060