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18029260 = 2258310861
BaseRepresentation
bin100010011000…
…1101011001100
31020220222111101
41010301223030
514103414020
61442232444
7306150304
oct104615314
936828441
1018029260
11a1a4717
126055724
133973402
142574604
1518b200a
hex1131acc

18029260 has 24 divisors (see below), whose sum is σ = 38321136. Its totient is φ = 7124160.

The previous prime is 18029251. The next prime is 18029261. The reversal of 18029260 is 6292081.

It is a happy number.

It is a super-2 number, since 2×180292602 = 650108432295200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18029261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3771 + ... + 7090.

It is an arithmetic number, because the mean of its divisors is an integer number (1596714).

Almost surely, 218029260 is an apocalyptic number.

18029260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18029260 is an abundant number, since it is smaller than the sum of its proper divisors (20291876).

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

18029260 is a wasteful number, since it uses less digits than its factorization.

18029260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10953 (or 10951 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18029260 is about 4246.0876109661. The cubic root of 18029260 is about 262.2160679022.

The spelling of 18029260 in words is "eighteen million, twenty-nine thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 83 166 332 415 830 1660 10861 21722 43444 54305 108610 217220 901463 1802926 3605852 4507315 9014630 18029260