227978818 has 4 divisors (see below), whose sum is σ = 341968230. Its totient is φ = 113989408.

The previous prime is 227978813. The next prime is 227978833. The reversal of 227978818 is 818879722.

227978818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 151363809 + 76615009 = 12303^2 + 8753^2 .

It is not an unprimeable number, because it can be changed into a prime (227978813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56994703 + ... + 56994706.

Almost surely, 2^227978818 is an apocalyptic number.

227978818 is a deficient number, since it is larger than the sum of its proper divisors (113989412).

227978818 is a wasteful number, since it uses less digits than its factorization.

227978818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113989411.

The product of its digits is 903168, while the sum is 52.

The square root of 227978818 is about 15098.9674481403. The cubic root of 227978818 is about 610.8925552366.

The spelling of 227978818 in words is "two hundred twenty-seven million, nine hundred seventy-eight thousand, eight hundred eighteen".