227978 has 4 divisors (see below), whose sum is σ = 341970. Its totient is φ = 113988.

The previous prime is 227977. The next prime is 227989. The reversal of 227978 is 879722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879722 = 2 ⋅439861.

It can be written as a sum of positive squares in only one way, i.e., 142129 + 85849 = 377^2 + 293^2 .

It is not an unprimeable number, because it can be changed into a prime (227977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56993 + ... + 56996.

2²²⁷⁹⁷⁸ is an apocalyptic number.

227978 is a deficient number, since it is larger than the sum of its proper divisors (113992).

227978 is a wasteful number, since it uses less digits than its factorization.

227978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113991.

The product of its digits is 14112, while the sum is 35.

The square root of 227978 is about 477.4704179318. The cubic root of 227978 is about 61.0891824597.

It can be divided in two parts, 22 and 7978, that added together give a cube (8000 = 20³).

The spelling of 227978 in words is "two hundred twenty-seven thousand, nine hundred seventy-eight".