11405412 has 18 divisors (see below), whose sum is σ = 28830438. Its totient is φ = 3801792.

The previous prime is 11405411. The next prime is 11405423. The reversal of 11405412 is 21450411.

It can be written as a sum of positive squares in only one way, i.e., 9400356 + 2005056 = 3066^2 + 1416^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (11405411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158373 + ... + 158444.

It is an arithmetic number, because the mean of its divisors is an integer number (1601691).

Almost surely, 2^11405412 is an apocalyptic number.

11405412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11405412 is an abundant number, since it is smaller than the sum of its proper divisors (17425026).

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

11405412 is a wasteful number, since it uses less digits than its factorization.

11405412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316827 (or 316822 counting only the distinct ones).

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

The square root of 11405412 is about 3377.1899561618. The cubic root of 11405412 is about 225.0973208620.

Adding to 11405412 its reverse (21450411), we get a palindrome (32855823).

The spelling of 11405412 in words is "eleven million, four hundred five thousand, four hundred twelve".