12261408 has 48 divisors (see below), whose sum is σ = 32366880. Its totient is φ = 4064256.

The previous prime is 12261383. The next prime is 12261409. The reversal of 12261408 is 80416221.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×12261408² = 300684252284928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12261409) 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, 32163 + ... + 32541.

It is an arithmetic number, because the mean of its divisors is an integer number (674310).

Almost surely, 2^12261408 is an apocalyptic number.

12261408 is the 2022-nd octagonal number.

It is an amenable number.

12261408 is an abundant number, since it is smaller than the sum of its proper divisors (20105472).

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

12261408 is a wasteful number, since it uses less digits than its factorization.

12261408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 12261408 is about 3501.6293350382. The cubic root of 12261408 is about 230.5933513904.

Adding to 12261408 its reverse (80416221), we get a palindrome (92677629).

The spelling of 12261408 in words is "twelve million, two hundred sixty-one thousand, four hundred eight".