12450215 has 8 divisors (see below), whose sum is σ = 14968800. Its totient is φ = 9941152.

The previous prime is 12450211. The next prime is 12450247. The reversal of 12450215 is 51205421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12450215 - 2² = 12450211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12450211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917 + ... + 5073.

It is an arithmetic number, because the mean of its divisors is an integer number (1871100).

Almost surely, 2^12450215 is an apocalyptic number.

12450215 is a deficient number, since it is larger than the sum of its proper divisors (2518585).

12450215 is an equidigital number, since it uses as much as digits as its factorization.

12450215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12450215 is about 3528.4862193298. The cubic root of 12450215 is about 231.7709230613.

Adding to 12450215 its reverse (51205421), we get a palindrome (63655636).

The spelling of 12450215 in words is "twelve million, four hundred fifty thousand, two hundred fifteen".