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12109370 = 2572131901
BaseRepresentation
bin101110001100…
…011000111010
3211210012221012
4232030120322
511044444440
61111313522
7204633200
oct56143072
924705835
1012109370
116920a49
12407b8a2
13267ca10
141873070
1510e2e65
hexb8c63a

12109370 has 48 divisors (see below), whose sum is σ = 27320328. Its totient is φ = 3830400.

The previous prime is 12109369. The next prime is 12109381. The reversal of 12109370 is 7390121.

12109370 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4618201 + 7491169 = 2149^2 + 2737^2 .

12109370 is strictly pandigital in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5420 + ... + 7320.

Almost surely, 212109370 is an apocalyptic number.

12109370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12109370 is an abundant number, since it is smaller than the sum of its proper divisors (15210958).

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

12109370 is a wasteful number, since it uses less digits than its factorization.

12109370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935 (or 1928 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 12109370 is about 3479.8520083475. The cubic root of 12109370 is about 229.6362871459.

Adding to 12109370 its reverse (7390121), we get a palindrome (19499491).

The spelling of 12109370 in words is "twelve million, one hundred nine thousand, three hundred seventy".

Divisors: 1 2 5 7 10 13 14 26 35 49 65 70 91 98 130 182 245 455 490 637 910 1274 1901 3185 3802 6370 9505 13307 19010 24713 26614 49426 66535 93149 123565 133070 172991 186298 247130 345982 465745 864955 931490 1210937 1729910 2421874 6054685 12109370