12503536 has 40 divisors (see below), whose sum is σ = 25739424. Its totient is φ = 5871360.

The previous prime is 12503489. The next prime is 12503549. The reversal of 12503536 is 63530521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12503536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22170 + ... + 22726.

Almost surely, 2^12503536 is an apocalyptic number.

12503536 is a gapful number since it is divisible by the number (16) 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 12503536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12869712).

12503536 is an abundant number, since it is smaller than the sum of its proper divisors (13235888).

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

12503536 is a wasteful number, since it uses less digits than its factorization.

12503536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 12503536 is about 3536.0339364887. The cubic root of 12503536 is about 232.1013231616.

The spelling of 12503536 in words is "twelve million, five hundred three thousand, five hundred thirty-six".