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12383740 = 225619187
BaseRepresentation
bin101111001111…
…010111111100
3212022011022001
4233033113330
511132234430
61121232044
7210155125
oct57172774
925264261
1012383740
116a990a6
124192624
132747875
14190504c
1511493ca
hexbcf5fc

12383740 has 12 divisors (see below), whose sum is σ = 26005896. Its totient is φ = 4953488.

The previous prime is 12383719. The next prime is 12383741. The reversal of 12383740 is 4738321.

It is a junction number, because it is equal to n+sod(n) for n = 12383699 and 12383708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12383741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309574 + ... + 309613.

It is an arithmetic number, because the mean of its divisors is an integer number (2167158).

Almost surely, 212383740 is an apocalyptic number.

12383740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12383740 is an abundant number, since it is smaller than the sum of its proper divisors (13622156).

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

12383740 is a wasteful number, since it uses less digits than its factorization.

12383740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619196 (or 619194 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 12383740 is about 3519.0538501137. The cubic root of 12383740 is about 231.3576912584.

The spelling of 12383740 in words is "twelve million, three hundred eighty-three thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 619187 1238374 2476748 3095935 6191870 12383740