227772978 has 32 divisors (see below), whose sum is σ = 470809152. Its totient is φ = 73416000.

The previous prime is 227772977. The next prime is 227773001. The reversal of 227772978 is 879277722.

227772978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 227772978.

It is not an unprimeable number, because it can be changed into a prime (227772971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21688 + ... + 30428.

It is an arithmetic number, because the mean of its divisors is an integer number (14712786).

Almost surely, 2^227772978 is an apocalyptic number.

227772978 is an abundant number, since it is smaller than the sum of its proper divisors (243036174).

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

227772978 is a wasteful number, since it uses less digits than its factorization.

227772978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890.

The product of its digits is 1382976, while the sum is 51.

The square root of 227772978 is about 15092.1495486892. The cubic root of 227772978 is about 610.7086434318.

The spelling of 227772978 in words is "two hundred twenty-seven million, seven hundred seventy-two thousand, nine hundred seventy-eight".