12268509 has 32 divisors (see below), whose sum is σ = 19906560. Its totient is φ = 6624000.

The previous prime is 12268489. The next prime is 12268541. The reversal of 12268509 is 90586221.

It is not a de Polignac number, because 12268509 - 2⁸ = 12268253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12268509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12268559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10084 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (622080).

Almost surely, 2^12268509 is an apocalyptic number.

12268509 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12268509 is a deficient number, since it is larger than the sum of its proper divisors (7638051).

12268509 is a wasteful number, since it uses less digits than its factorization.

12268509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 12268509 is about 3502.6431448265. The cubic root of 12268509 is about 230.6378576273.

The spelling of 12268509 in words is "twelve million, two hundred sixty-eight thousand, five hundred nine".