12020445 has 48 divisors (see below), whose sum is σ = 23250240. Its totient is φ = 5709312.

The previous prime is 12020443. The next prime is 12020447. The reversal of 12020445 is 54402021.

It is an interprime number because it is at equal distance from previous prime (12020443) and next prime (12020447).

It is not a de Polignac number, because 12020445 - 2¹ = 12020443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14122 + ... + 14948.

It is an arithmetic number, because the mean of its divisors is an integer number (484380).

Almost surely, 2^12020445 is an apocalyptic number.

12020445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12020445 is a deficient number, since it is larger than the sum of its proper divisors (11229795).

12020445 is a wasteful number, since it uses less digits than its factorization.

12020445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 12020445 is about 3467.0513408371. The cubic root of 12020445 is about 229.0727951991.

Adding to 12020445 its reverse (54402021), we get a palindrome (66422466).

The spelling of 12020445 in words is "twelve million, twenty thousand, four hundred forty-five".