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12087474 = 237793643
BaseRepresentation
bin101110000111…
…000010110010
3211202002220020
4232013002302
511043244344
61111024310
7204512310
oct56070262
924662806
1012087474
116906553
12406b096
132672a69
1418690b0
1510db719
hexb870b2

12087474 has 32 divisors (see below), whose sum is σ = 27985920. Its totient is φ = 3408912.

The previous prime is 12087463. The next prime is 12087503. The reversal of 12087474 is 47478021.

It is a super-2 number, since 2×120874742 = 292214055401352, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1497 + ... + 5139.

It is an arithmetic number, because the mean of its divisors is an integer number (874560).

Almost surely, 212087474 is an apocalyptic number.

12087474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12087474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13992960).

12087474 is an abundant number, since it is smaller than the sum of its proper divisors (15898446).

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

12087474 is a wasteful number, since it uses less digits than its factorization.

12087474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 12087474 is about 3476.7044740674. The cubic root of 12087474 is about 229.4977952238.

It can be divided in two parts, 12087 and 474, that added together give a triangular number (12561 = T158).

The spelling of 12087474 in words is "twelve million, eighty-seven thousand, four hundred seventy-four".

Divisors: 1 2 3 6 7 14 21 42 79 158 237 474 553 1106 1659 3318 3643 7286 10929 21858 25501 51002 76503 153006 287797 575594 863391 1726782 2014579 4029158 6043737 12087474