228947146 has 4 divisors (see below), whose sum is σ = 343420722. Its totient is φ = 114473572.

The previous prime is 228947137. The next prime is 228947149. The reversal of 228947146 is 641749822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 127441521 + 101505625 = 11289^2 + 10075^2 .

It is not an unprimeable number, because it can be changed into a prime (228947149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57236785 + ... + 57236788.

Almost surely, 2^228947146 is an apocalyptic number.

228947146 is a deficient number, since it is larger than the sum of its proper divisors (114473576).

228947146 is a wasteful number, since it uses less digits than its factorization.

228947146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114473575.

The product of its digits is 193536, while the sum is 43.

The square root of 228947146 is about 15130.9995043289. Note that the first 3 decimals coincide. The cubic root of 228947146 is about 611.7562448610.

The spelling of 228947146 in words is "two hundred twenty-eight million, nine hundred forty-seven thousand, one hundred forty-six".