12496640 has 72 divisors (see below), whose sum is σ = 32278848. Its totient is φ = 4608000.

The previous prime is 12496633. The next prime is 12496657. The reversal of 12496640 is 4669421.

It is a happy number.

12496640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12496640² = 312332022579200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 12496597 and 12496606.

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, 16265 + ... + 17015.

Almost surely, 2^12496640 is an apocalyptic number.

12496640 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 12496640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16139424).

12496640 is an abundant number, since it is smaller than the sum of its proper divisors (19782208).

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

12496640 is an equidigital number, since it uses as much as digits as its factorization.

12496640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 12496640 is about 3535.0586982397. The cubic root of 12496640 is about 232.0586454992.

The spelling of 12496640 in words is "twelve million, four hundred ninety-six thousand, six hundred forty".