228616772 has 24 divisors (see below), whose sum is σ = 409752000. Its totient is φ = 111567456.

The previous prime is 228616771. The next prime is 228616811. The reversal of 228616772 is 277616822.

It is not an unprimeable number, because it can be changed into a prime (228616771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39479 + ... + 44897.

It is an arithmetic number, because the mean of its divisors is an integer number (17073000).

Almost surely, 2^228616772 is an apocalyptic number.

It is an amenable number.

228616772 is a deficient number, since it is larger than the sum of its proper divisors (181135228).

228616772 is a wasteful number, since it uses less digits than its factorization.

228616772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5675 (or 5673 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 228616772 is about 15120.0784389500. The cubic root of 228616772 is about 611.4618455433.

Subtracting 228616772 from its reverse (277616822), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 228616772 in words is "two hundred twenty-eight million, six hundred sixteen thousand, seven hundred seventy-two".