228107978 has 8 divisors (see below), whose sum is σ = 391042272. Its totient is φ = 97760556.

The previous prime is 228107963. The next prime is 228107981. The reversal of 228107978 is 879701822.

228107978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8146700 + ... + 8146727.

It is an arithmetic number, because the mean of its divisors is an integer number (48880284).

Almost surely, 2^228107978 is an apocalyptic number.

228107978 is a deficient number, since it is larger than the sum of its proper divisors (162934294).

228107978 is a wasteful number, since it uses less digits than its factorization.

228107978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16293436.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 228107978 is about 15103.2439561837. The cubic root of 228107978 is about 611.0078992660.

The spelling of 228107978 in words is "two hundred twenty-eight million, one hundred seven thousand, nine hundred seventy-eight".