12423645 has 32 divisors (see below), whose sum is σ = 23788800. Its totient is φ = 6115392.

The previous prime is 12423643. The next prime is 12423667. The reversal of 12423645 is 54632421.

12423645 is a `hidden beast` number, since 12 + 4 + 2 + 3 + 645 = 666.

It is not a de Polignac number, because 12423645 - 2¹ = 12423643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1785 + ... + 5294.

It is an arithmetic number, because the mean of its divisors is an integer number (743400).

Almost surely, 2^12423645 is an apocalyptic number.

12423645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12423645 is a deficient number, since it is larger than the sum of its proper divisors (11365155).

12423645 is a wasteful number, since it uses less digits than its factorization.

12423645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106 (or 7100 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 12423645 is about 3524.7191377470. The cubic root of 12423645 is about 231.6059315509.

The spelling of 12423645 in words is "twelve million, four hundred twenty-three thousand, six hundred forty-five".