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18142960 = 2451153389
BaseRepresentation
bin100010100110…
…1011011110000
31021010202110111
41011031123300
514121033320
61444511104
7310132633
oct105153360
937122414
1018142960
11a272090
1260ab494
1339b30a4
1425a3c1a
1518d5a5a
hex114d6f0

18142960 has 80 divisors (see below), whose sum is σ = 47005920. Its totient is φ = 6456320.

The previous prime is 18142937. The next prime is 18142963. The reversal of 18142960 is 6924181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142963) 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, 46446 + ... + 46834.

It is an arithmetic number, because the mean of its divisors is an integer number (587574).

Almost surely, 218142960 is an apocalyptic number.

18142960 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 18142960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23502960).

18142960 is an abundant number, since it is smaller than the sum of its proper divisors (28862960).

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

18142960 is a wasteful number, since it uses less digits than its factorization.

18142960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18142960 is about 4259.4553642455. The cubic root of 18142960 is about 262.7661276846.

It can be divided in two parts, 1814 and 2960, that added together give a palindrome (4774).

The spelling of 18142960 in words is "eighteen million, one hundred forty-two thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 53 55 80 88 106 110 176 212 220 265 389 424 440 530 583 778 848 880 1060 1166 1556 1945 2120 2332 2915 3112 3890 4240 4279 4664 5830 6224 7780 8558 9328 11660 15560 17116 20617 21395 23320 31120 34232 41234 42790 46640 68464 82468 85580 103085 164936 171160 206170 226787 329872 342320 412340 453574 824680 907148 1133935 1649360 1814296 2267870 3628592 4535740 9071480 18142960