12011436 has 24 divisors (see below), whose sum is σ = 31141040. Its totient is φ = 4003776.

The previous prime is 12011411. The next prime is 12011459. The reversal of 12011436 is 63411021.

It is a happy number.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 55501 + ... + 55716.

Almost surely, 2^12011436 is an apocalyptic number.

It is an amenable number.

12011436 is an abundant number, since it is smaller than the sum of its proper divisors (19129604).

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

12011436 is a wasteful number, since it uses less digits than its factorization.

12011436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111230 (or 111222 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12011436 is about 3465.7518664786. The cubic root of 12011436 is about 229.0155529313.

Adding to 12011436 its reverse (63411021), we get a palindrome (75422457).

The spelling of 12011436 in words is "twelve million, eleven thousand, four hundred thirty-six".