228779732 has 12 divisors (see below), whose sum is σ = 411185460. Its totient is φ = 111298176.

The previous prime is 228779717. The next prime is 228779797. The reversal of 228779732 is 237977822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 175138756 + 53640976 = 13234^2 + 7324^2 .

It is a congruent number.

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, 772757 + ... + 773052.

It is an arithmetic number, because the mean of its divisors is an integer number (34265455).

Almost surely, 2^228779732 is an apocalyptic number.

It is an amenable number.

228779732 is a deficient number, since it is larger than the sum of its proper divisors (182405728).

228779732 is a wasteful number, since it uses less digits than its factorization.

228779732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545850 (or 1545848 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

The square root of 228779732 is about 15125.4663399183. The cubic root of 228779732 is about 611.6070961231.

The spelling of 228779732 in words is "two hundred twenty-eight million, seven hundred seventy-nine thousand, seven hundred thirty-two".