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12007720 = 235300193
BaseRepresentation
bin101101110011…
…100100101000
3211121001111101
4231303210220
511033221340
61105211144
7204030634
oct55634450
924531441
1012007720
11686163a
124030ab4
13264567a
141847dc4
1510c2c9a
hexb73928

12007720 has 16 divisors (see below), whose sum is σ = 27017460. Its totient is φ = 4803072.

The previous prime is 12007669. The next prime is 12007747. The reversal of 12007720 is 2770021.

12007720 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 10666756 + 1340964 = 3266^2 + 1158^2 .

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, 150057 + ... + 150136.

Almost surely, 212007720 is an apocalyptic number.

12007720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12007720 is an abundant number, since it is smaller than the sum of its proper divisors (15009740).

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

12007720 is a wasteful number, since it uses less digits than its factorization.

12007720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300204 (or 300200 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 12007720 is about 3465.2157220006. The cubic root of 12007720 is about 228.9919335081.

Adding to 12007720 its reverse (2770021), we get a palindrome (14777741).

The spelling of 12007720 in words is "twelve million, seven thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 300193 600386 1200772 1500965 2401544 3001930 6003860 12007720