12023406 has 24 divisors (see below), whose sum is σ = 26231400. Its totient is φ = 3980016.

The previous prime is 12023393. The next prime is 12023419. The reversal of 12023406 is 60432021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12023393) and next prime (12023419).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441 + ... + 4923.

It is an arithmetic number, because the mean of its divisors is an integer number (1092975).

Almost surely, 2^12023406 is an apocalyptic number.

12023406 is an abundant number, since it is smaller than the sum of its proper divisors (14207994).

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

12023406 is a wasteful number, since it uses less digits than its factorization.

12023406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640 (or 4637 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12023406 is about 3467.4783344673. The cubic root of 12023406 is about 229.0916028461.

Adding to 12023406 its reverse (60432021), we get a palindrome (72455427).

The spelling of 12023406 in words is "twelve million, twenty-three thousand, four hundred six".