22230278 has 8 divisors (see below), whose sum is σ = 38109072. Its totient is φ = 9527256.

The previous prime is 22230251. The next prime is 22230281. The reversal of 22230278 is 87203222.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793925 + ... + 793952.

It is an arithmetic number, because the mean of its divisors is an integer number (4763634).

Almost surely, 2^22230278 is an apocalyptic number.

22230278 is a deficient number, since it is larger than the sum of its proper divisors (15878794).

22230278 is a wasteful number, since it uses less digits than its factorization.

22230278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587886.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 22230278 is about 4714.8995747524. The cubic root of 22230278 is about 281.1781901936.

The spelling of 22230278 in words is "twenty-two million, two hundred thirty thousand, two hundred seventy-eight".