227426778 has 20 divisors (see below), whose sum is σ = 509604810. Its totient is φ = 75808872.

The previous prime is 227426777. The next prime is 227426807. The reversal of 227426778 is 877624722.

227426778 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 149157369 + 78269409 = 12213^2 + 8847^2 .

It is a super-2 number, since 2×227426778² = 103445878702922568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (227426777) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 701773 + ... + 702096.

Almost surely, 2^227426778 is an apocalyptic number.

227426778 is an abundant number, since it is smaller than the sum of its proper divisors (282178032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

227426778 is a wasteful number, since it uses less digits than its factorization.

227426778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403883 (or 1403874 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 227426778 is about 15080.6756479940. The cubic root of 227426778 is about 610.3990741649.

The spelling of 227426778 in words is "two hundred twenty-seven million, four hundred twenty-six thousand, seven hundred seventy-eight".