12009456 has 30 divisors (see below), whose sum is σ = 33610200. Its totient is φ = 4003104.

The previous prime is 12009443. The next prime is 12009469. The reversal of 12009456 is 65490021.

12009456 is a `hidden beast` number, since 1 + 200 + 9 + 456 = 666.

It is an interprime number because it is at equal distance from previous prime (12009443) and next prime (12009469).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41556 + ... + 41843.

It is an arithmetic number, because the mean of its divisors is an integer number (1120340).

Almost surely, 2^12009456 is an apocalyptic number.

12009456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12009456 is an abundant number, since it is smaller than the sum of its proper divisors (21600744).

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

12009456 is a wasteful number, since it uses less digits than its factorization.

12009456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83413 (or 83404 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12009456 is about 3465.4662024034. The cubic root of 12009456 is about 229.0029683768.

Adding to 12009456 its reverse (65490021), we get a palindrome (77499477).

The spelling of 12009456 in words is "twelve million, nine thousand, four hundred fifty-six".