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12379240 = 235309481
BaseRepresentation
bin101111001110…
…010001101000
3212021221010101
4233032101220
511132113430
61121155144
7210136036
oct57162150
925257111
1012379240
116a95785
12418bab4
1327457c3
141903556
151147dca
hexbce468

12379240 has 16 divisors (see below), whose sum is σ = 27853380. Its totient is φ = 4951680.

The previous prime is 12379229. The next prime is 12379273. The reversal of 12379240 is 4297321.

12379240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12376324 + 2916 = 3518^2 + 54^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12379199 and 12379208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154701 + ... + 154780.

Almost surely, 212379240 is an apocalyptic number.

12379240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12379240 is an abundant number, since it is smaller than the sum of its proper divisors (15474140).

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

12379240 is a wasteful number, since it uses less digits than its factorization.

12379240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309492 (or 309488 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 12379240 is about 3518.4144156139. The cubic root of 12379240 is about 231.3296642988.

The spelling of 12379240 in words is "twelve million, three hundred seventy-nine thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 309481 618962 1237924 1547405 2475848 3094810 6189620 12379240