12020406 has 16 divisors (see below), whose sum is σ = 24098304. Its totient is φ = 3997224.

The previous prime is 12020389. The next prime is 12020417. The reversal of 12020406 is 60402021.

It is a congruent number.

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, 615 + ... + 4941.

It is an arithmetic number, because the mean of its divisors is an integer number (1506144).

Almost surely, 2^12020406 is an apocalyptic number.

12020406 is an abundant number, since it is smaller than the sum of its proper divisors (12077898).

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

12020406 is a wasteful number, since it uses less digits than its factorization.

12020406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12020406 is about 3467.0457164566. The cubic root of 12020406 is about 229.0725474587.

Adding to 12020406 its reverse (60402021), we get a palindrome (72422427).

The spelling of 12020406 in words is "twelve million, twenty thousand, four hundred six".