12578222 has 8 divisors (see below), whose sum is σ = 19106400. Its totient is φ = 6209424.

The previous prime is 12578201. The next prime is 12578239. The reversal of 12578222 is 22287521.

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

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, 39647 + ... + 39962.

It is an arithmetic number, because the mean of its divisors is an integer number (2388300).

Almost surely, 2^12578222 is an apocalyptic number.

12578222 is a deficient number, since it is larger than the sum of its proper divisors (6528178).

12578222 is an equidigital number, since it uses as much as digits as its factorization.

12578222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79690.

The product of its digits is 4480, while the sum is 29.

The square root of 12578222 is about 3546.5789149545. The cubic root of 12578222 is about 232.5625345335.

The spelling of 12578222 in words is "twelve million, five hundred seventy-eight thousand, two hundred twenty-two".