12450220 has 48 divisors (see below), whose sum is σ = 27675648. Its totient is φ = 4697280.

The previous prime is 12450211. The next prime is 12450247. The reversal of 12450220 is 2205421.

It is a junction number, because it is equal to n+sod(n) for n = 12450194 and 12450203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26427 + ... + 26893.

It is an arithmetic number, because the mean of its divisors is an integer number (576576).

Almost surely, 2^12450220 is an apocalyptic number.

12450220 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 12450220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13837824).

12450220 is an abundant number, since it is smaller than the sum of its proper divisors (15225428).

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

12450220 is a wasteful number, since it uses less digits than its factorization.

12450220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12450220 is about 3528.4869278488. The cubic root of 12450220 is about 231.7709540877.

Adding to 12450220 its reverse (2205421), we get a palindrome (14655641).

The spelling of 12450220 in words is "twelve million, four hundred fifty thousand, two hundred twenty".