12604020 has 144 divisors (see below), whose sum is σ = 42057792. Its totient is φ = 2795520.

The previous prime is 12604019. The next prime is 12604057. The reversal of 12604020 is 2040621.

12604020 = 223² + 224² + ... + 365².

It is a super-2 number, since 2×12604020² = 317722640320800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111484 + ... + 111596.

It is an arithmetic number, because the mean of its divisors is an integer number (292068).

Almost surely, 2^12604020 is an apocalyptic number.

12604020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12604020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21028896).

12604020 is an abundant number, since it is smaller than the sum of its proper divisors (29453772).

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

12604020 is a wasteful number, since it uses less digits than its factorization.

12604020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 147 counting only the distinct ones).

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

The square root of 12604020 is about 3550.2140780522. The cubic root of 12604020 is about 232.7214216206.

Adding to 12604020 its reverse (2040621), we get a palindrome (14644641).

The spelling of 12604020 in words is "twelve million, six hundred four thousand, twenty".