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18260052 = 2231521671
BaseRepresentation
bin100010110101…
…0000001010100
31021100201002020
41011222001110
514133310202
61451213140
7311131206
oct105520124
937321066
1018260052
11a342058
1261471b0
133a24485
1425d4776
15190a5bc
hex116a054

18260052 has 12 divisors (see below), whose sum is σ = 42606816. Its totient is φ = 6086680.

The previous prime is 18260051. The next prime is 18260063. The reversal of 18260052 is 25006281.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18260051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760824 + ... + 760847.

It is an arithmetic number, because the mean of its divisors is an integer number (3550568).

Almost surely, 218260052 is an apocalyptic number.

18260052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18260052 is an abundant number, since it is smaller than the sum of its proper divisors (24346764).

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

18260052 is a wasteful number, since it uses less digits than its factorization.

18260052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521678 (or 1521676 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18260052 is about 4273.1782083129. The cubic root of 18260052 is about 263.3302006072.

The spelling of 18260052 in words is "eighteen million, two hundred sixty thousand, fifty-two".

Divisors: 1 2 3 4 6 12 1521671 3043342 4565013 6086684 9130026 18260052