226478391 has 8 divisors (see below), whose sum is σ = 303039360. Its totient is φ = 150451512.

The previous prime is 226478323. The next prime is 226478393. The reversal of 226478391 is 193874622.

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

It is not a de Polignac number, because 226478391 - 2¹⁵ = 226445623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226478393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132531 + ... + 134228.

It is an arithmetic number, because the mean of its divisors is an integer number (37879920).

Almost surely, 2^226478391 is an apocalyptic number.

226478391 is a deficient number, since it is larger than the sum of its proper divisors (76560969).

226478391 is a wasteful number, since it uses less digits than its factorization.

226478391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267045.

The product of its digits is 145152, while the sum is 42.

The square root of 226478391 is about 15049.1990152300. The cubic root of 226478391 is about 609.5494218074.

The spelling of 226478391 in words is "two hundred twenty-six million, four hundred seventy-eight thousand, three hundred ninety-one".