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12072018 = 237833463
BaseRepresentation
bin101110000011…
…010001010010
3211201022200210
4232003101102
511042301033
61110424550
7204416250
oct56032122
924638623
1012072018
1168a5982
124062156
132668a0a
1418635d0
1510d6d63
hexb83452

12072018 has 32 divisors (see below), whose sum is σ = 27933696. Its totient is φ = 3406608.

The previous prime is 12072013. The next prime is 12072019. The reversal of 12072018 is 81027021.

Adding to 12072018 its reverse (81027021), we get a palindrome (93099039).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 12071985 and 12072003.

It is not an unprimeable number, because it can be changed into a prime (12072013) 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, 1755 + ... + 5217.

It is an arithmetic number, because the mean of its divisors is an integer number (872928).

Almost surely, 212072018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12072018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13966848).

12072018 is an abundant number, since it is smaller than the sum of its proper divisors (15861678).

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

12072018 is a wasteful number, since it uses less digits than its factorization.

12072018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12072018 is about 3474.4809684326. The cubic root of 12072018 is about 229.3999354925.

The spelling of 12072018 in words is "twelve million, seventy-two thousand, eighteen".

Divisors: 1 2 3 6 7 14 21 42 83 166 249 498 581 1162 1743 3463 3486 6926 10389 20778 24241 48482 72723 145446 287429 574858 862287 1724574 2012003 4024006 6036009 12072018