12271404 has 24 divisors (see below), whose sum is σ = 28735168. Its totient is φ = 4075920.

The previous prime is 12271403. The next prime is 12271417. The reversal of 12271404 is 40417221.

It is a happy number.

It is a super-2 number, since 2×12271404² = 301174712262432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12271403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2019 + ... + 5349.

Almost surely, 2^12271404 is an apocalyptic number.

It is an amenable number.

12271404 is an abundant number, since it is smaller than the sum of its proper divisors (16463764).

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

12271404 is a wasteful number, since it uses less digits than its factorization.

12271404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3645 (or 3643 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 12271404 is about 3503.0563797918. The cubic root of 12271404 is about 230.6559974052.

Adding to 12271404 its reverse (40417221), we get a palindrome (52688625).

The spelling of 12271404 in words is "twelve million, two hundred seventy-one thousand, four hundred four".