12228478 has 8 divisors (see below), whose sum is σ = 18688968. Its totient is φ = 5998824.

The previous prime is 12228467. The next prime is 12228481. The reversal of 12228478 is 87482221.

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, 57576 + ... + 57787.

It is an arithmetic number, because the mean of its divisors is an integer number (2336121).

Almost surely, 2^12228478 is an apocalyptic number.

12228478 is a deficient number, since it is larger than the sum of its proper divisors (6460490).

12228478 is a wasteful number, since it uses less digits than its factorization.

12228478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115418.

The product of its digits is 14336, while the sum is 34.

The square root of 12228478 is about 3496.9240769568. The cubic root of 12228478 is about 230.3867343627.

The spelling of 12228478 in words is "twelve million, two hundred twenty-eight thousand, four hundred seventy-eight".