222478905 has 16 divisors (see below), whose sum is σ = 388327104. Its totient is φ = 107868480.

The previous prime is 222478897. The next prime is 222478939. The reversal of 222478905 is 509874222.

It is not a de Polignac number, because 222478905 - 2³ = 222478897 is a prime.

It is a Curzon number.

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, 674014 + ... + 674343.

It is an arithmetic number, because the mean of its divisors is an integer number (24270444).

Almost surely, 2^222478905 is an apocalyptic number.

It is an amenable number.

222478905 is a deficient number, since it is larger than the sum of its proper divisors (165848199).

222478905 is a wasteful number, since it uses less digits than its factorization.

222478905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348376.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 222478905 is about 14915.7267674090. The cubic root of 222478905 is about 605.9399863234.

The spelling of 222478905 in words is "two hundred twenty-two million, four hundred seventy-eight thousand, nine hundred five".