12765320 has 16 divisors (see below), whose sum is σ = 28722060. Its totient is φ = 5106112.

The previous prime is 12765301. The next prime is 12765323. The reversal of 12765320 is 2356721.

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 1623076 = 3338^2 + 1274^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12765320.

It is not an unprimeable number, because it can be changed into a prime (12765323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159527 + ... + 159606.

Almost surely, 2^12765320 is an apocalyptic number.

12765320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12765320 is an abundant number, since it is smaller than the sum of its proper divisors (15956740).

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

12765320 is a wasteful number, since it uses less digits than its factorization.

12765320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319144 (or 319140 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 12765320 is about 3572.8587993370. The cubic root of 12765320 is about 233.7099676933.

The spelling of 12765320 in words is "twelve million, seven hundred sixty-five thousand, three hundred twenty".