227147978 has 4 divisors (see below), whose sum is σ = 340721970. Its totient is φ = 113573988.

The previous prime is 227147971. The next prime is 227147993. The reversal of 227147978 is 879741722.

227147978 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 879741722 = 2 ⋅439870861.

It can be written as a sum of positive squares in only one way, i.e., 218951209 + 8196769 = 14797^2 + 2863^2 .

It is not an unprimeable number, because it can be changed into a prime (227147971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56786993 + ... + 56786996.

Almost surely, 2^227147978 is an apocalyptic number.

227147978 is a deficient number, since it is larger than the sum of its proper divisors (113573992).

227147978 is a wasteful number, since it uses less digits than its factorization.

227147978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113573991.

The product of its digits is 395136, while the sum is 47.

The square root of 227147978 is about 15071.4291956669. The cubic root of 227147978 is about 610.1495449889.

The spelling of 227147978 in words is "two hundred twenty-seven million, one hundred forty-seven thousand, nine hundred seventy-eight".