12022434 has 48 divisors (see below), whose sum is σ = 27925560. Its totient is φ = 3724800.

The previous prime is 12022433. The next prime is 12022441. The reversal of 12022434 is 43422021.

It can be written as a sum of positive squares in 4 ways, for example, as 11923209 + 99225 = 3453^2 + 315^2 .

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 (12022433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30712 + ... + 31100.

Almost surely, 2^12022434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12022434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13962780).

12022434 is an abundant number, since it is smaller than the sum of its proper divisors (15903126).

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

12022434 is a wasteful number, since it uses less digits than its factorization.

12022434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12022434 is about 3467.3381721430. The cubic root of 12022434 is about 229.0854292477.

Adding to 12022434 its reverse (43422021), we get a palindrome (55444455).

The spelling of 12022434 in words is "twelve million, twenty-two thousand, four hundred thirty-four".