12815604 has 48 divisors (see below), whose sum is σ = 33566400. Its totient is φ = 4228128.

The previous prime is 12815597. The next prime is 12815609. The reversal of 12815604 is 40651821.

12815604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (12815609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11002 + ... + 12110.

It is an arithmetic number, because the mean of its divisors is an integer number (699300).

Almost surely, 2^12815604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12815604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16783200).

12815604 is an abundant number, since it is smaller than the sum of its proper divisors (20750796).

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

12815604 is a wasteful number, since it uses less digits than its factorization.

12815604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12815604 is about 3579.8888250894. Note that the first 4 decimals coincide. The cubic root of 12815604 is about 234.0164354005.

The spelling of 12815604 in words is "twelve million, eight hundred fifteen thousand, six hundred four".