12424820 has 12 divisors (see below), whose sum is σ = 26092164. Its totient is φ = 4969920.

The previous prime is 12424813. The next prime is 12424829. The reversal of 12424820 is 2842421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8271376 + 4153444 = 2876^2 + 2038^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310601 + ... + 310640.

It is an arithmetic number, because the mean of its divisors is an integer number (2174347).

Almost surely, 2^12424820 is an apocalyptic number.

12424820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12424820 is an abundant number, since it is smaller than the sum of its proper divisors (13667344).

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

12424820 is a wasteful number, since it uses less digits than its factorization.

12424820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621250 (or 621248 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 12424820 is about 3524.8858137534. The cubic root of 12424820 is about 231.6132329076.

The spelling of 12424820 in words is "twelve million, four hundred twenty-four thousand, eight hundred twenty".