12603990 has 64 divisors (see below), whose sum is σ = 35334144. Its totient is φ = 2817408.

The previous prime is 12603967. The next prime is 12604001. The reversal of 12603990 is 9930621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9232 + ... + 10508.

It is an arithmetic number, because the mean of its divisors is an integer number (552096).

Almost surely, 2^12603990 is an apocalyptic number.

12603990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12603990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17667072).

12603990 is an abundant number, since it is smaller than the sum of its proper divisors (22730154).

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

12603990 is a wasteful number, since it uses less digits than its factorization.

12603990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 12603990 is about 3550.2098529524. The cubic root of 12603990 is about 232.7212369798.

The spelling of 12603990 in words is "twelve million, six hundred three thousand, nine hundred ninety".