12071456 has 24 divisors (see below), whose sum is σ = 24016860. Its totient is φ = 5971968.

The previous prime is 12071443. The next prime is 12071461. The reversal of 12071456 is 65417021.

It can be written as a sum of positive squares in 2 ways, for example, as 11971600 + 99856 = 3460^2 + 316^2 .

It is a nialpdrome in base 16.

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, 1160 + ... + 5048.

Almost surely, 2^12071456 is an apocalyptic number.

12071456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12071456 is a deficient number, since it is larger than the sum of its proper divisors (11945404).

12071456 is an equidigital number, since it uses as much as digits as its factorization.

12071456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996 (or 3988 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 12071456 is about 3474.4000921022. The cubic root of 12071456 is about 229.3963756136.

Adding to 12071456 its reverse (65417021), we get a palindrome (77488477).

The spelling of 12071456 in words is "twelve million, seventy-one thousand, four hundred fifty-six".