12502640 has 40 divisors (see below), whose sum is σ = 29315088. Its totient is φ = 4958720.

The previous prime is 12502597. The next prime is 12502643. The reversal of 12502640 is 4620521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12502643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9884 + ... + 11076.

Almost surely, 2^12502640 is an apocalyptic number.

12502640 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 12502640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14657544).

12502640 is an abundant number, since it is smaller than the sum of its proper divisors (16812448).

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

12502640 is a wasteful number, since it uses less digits than its factorization.

12502640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12502640 is about 3535.9072386023. The cubic root of 12502640 is about 232.0957789232.

The spelling of 12502640 in words is "twelve million, five hundred two thousand, six hundred forty".