12115404 has 72 divisors (see below), whose sum is σ = 35363328. Its totient is φ = 3425760.

The previous prime is 12115399. The next prime is 12115421. The reversal of 12115404 is 40451121.

12115404 is a `hidden beast` number, since 121 + 1 + 540 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32829 + ... + 33195.

Almost surely, 2^12115404 is an apocalyptic number.

12115404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12115404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17681664).

12115404 is an abundant number, since it is smaller than the sum of its proper divisors (23247924).

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

12115404 is a wasteful number, since it uses less digits than its factorization.

12115404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 12115404 is about 3480.7188912637. The cubic root of 12115404 is about 229.6744227734.

Adding to 12115404 its reverse (40451121), we get a palindrome (52566525).

The spelling of 12115404 in words is "twelve million, one hundred fifteen thousand, four hundred four".