12040650 has 72 divisors (see below), whose sum is σ = 33581184. Its totient is φ = 3207600.

The previous prime is 12040649. The next prime is 12040681. The reversal of 12040650 is 5604021.

It is a happy number.

12040650 is a `hidden beast` number, since 12 + 0 + 4 + 0 + 650 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11655 + ... + 12645.

Almost surely, 2^12040650 is an apocalyptic number.

12040650 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 12040650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16790592).

12040650 is an abundant number, since it is smaller than the sum of its proper divisors (21540534).

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

12040650 is an equidigital number, since it uses as much as digits as its factorization.

12040650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12040650 is about 3469.9639767583. The cubic root of 12040650 is about 229.2010717858.

Adding to 12040650 its reverse (5604021), we get a palindrome (17644671).

The spelling of 12040650 in words is "twelve million, forty thousand, six hundred fifty".