228733978 has 16 divisors (see below), whose sum is σ = 375347520. Its totient is φ = 103676800.

The previous prime is 228733961. The next prime is 228733979. The reversal of 228733978 is 879337822.

228733978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228733979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6583 + ... + 22378.

It is an arithmetic number, because the mean of its divisors is an integer number (23459220).

Almost surely, 2^228733978 is an apocalyptic number.

228733978 is a deficient number, since it is larger than the sum of its proper divisors (146613542).

228733978 is a wasteful number, since it uses less digits than its factorization.

228733978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29333.

The product of its digits is 1016064, while the sum is 49.

The square root of 228733978 is about 15123.9537819976. The cubic root of 228733978 is about 611.5663213328.

The spelling of 228733978 in words is "two hundred twenty-eight million, seven hundred thirty-three thousand, nine hundred seventy-eight".