12550320 has 60 divisors (see below), whose sum is σ = 42150576. Its totient is φ = 3346560.

The previous prime is 12550313. The next prime is 12550337. The reversal of 12550320 is 2305521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a junction number, because it is equal to n+sod(n) for n = 12550293 and 12550302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7996 + ... + 9435.

Almost surely, 2^12550320 is an apocalyptic number.

12550320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12550320 is an abundant number, since it is smaller than the sum of its proper divisors (29600256).

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

12550320 is a wasteful number, since it uses less digits than its factorization.

12550320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17450 (or 17441 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 12550320 is about 3542.6430810907. The cubic root of 12550320 is about 232.3904443959.

Adding to 12550320 its reverse (2305521), we get a palindrome (14855841).

The spelling of 12550320 in words is "twelve million, five hundred fifty thousand, three hundred twenty".