12650240 has 36 divisors (see below), whose sum is σ = 30304344. Its totient is φ = 5059584.

The previous prime is 12650233. The next prime is 12650273. The reversal of 12650240 is 4205621.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3662 + ... + 6221.

Almost surely, 2^12650240 is an apocalyptic number.

12650240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12650240 is an abundant number, since it is smaller than the sum of its proper divisors (17654104).

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

12650240 is an frugal number, since it uses more digits than its factorization.

12650240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904 (or 9890 counting only the distinct ones).

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

The square root of 12650240 is about 3556.7175878891. The cubic root of 12650240 is about 233.0055442693.

Adding to 12650240 its reverse (4205621), we get a palindrome (16855861).

The spelling of 12650240 in words is "twelve million, six hundred fifty thousand, two hundred forty".