12005356 has 24 divisors (see below), whose sum is σ = 23917824. Its totient is φ = 5219280.

The previous prime is 12005347. The next prime is 12005363. The reversal of 12005356 is 65350021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 4920 + ... + 6943.

It is an arithmetic number, because the mean of its divisors is an integer number (996576).

Almost surely, 2^12005356 is an apocalyptic number.

It is an amenable number.

12005356 is a deficient number, since it is larger than the sum of its proper divisors (11912468).

12005356 is a wasteful number, since it uses less digits than its factorization.

12005356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11901 (or 11899 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 12005356 is about 3464.8746009055. The cubic root of 12005356 is about 228.9769050526.

Adding to 12005356 its reverse (65350021), we get a palindrome (77355377).

It can be divided in two parts, 1200 and 5356, that added together give a palindrome (6556).

The spelling of 12005356 in words is "twelve million, five thousand, three hundred fifty-six".