12600040 has 64 divisors (see below), whose sum is σ = 30456000. Its totient is φ = 4677120.

The previous prime is 12600037. The next prime is 12600047. The reversal of 12600040 is 4000621.

It is a super-2 number, since 2×12600040² = 317522016003200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12600047) 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, 44700 + ... + 44980.

It is an arithmetic number, because the mean of its divisors is an integer number (475875).

Almost surely, 2^12600040 is an apocalyptic number.

12600040 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 12600040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15228000).

12600040 is an abundant number, since it is smaller than the sum of its proper divisors (17855960).

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

12600040 is a wasteful number, since it uses less digits than its factorization.

12600040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12600040 is about 3549.6535042170. The cubic root of 12600040 is about 232.6969233847.

Adding to 12600040 its reverse (4000621), we get a palindrome (16600661).

The spelling of 12600040 in words is "twelve million, six hundred thousand, forty".