224774728 has 8 divisors (see below), whose sum is σ = 421452630. Its totient is φ = 112387360.

The previous prime is 224774687. The next prime is 224774729. The reversal of 224774728 is 827477422.

It can be written as a sum of positive squares in only one way, i.e., 176305284 + 48469444 = 13278^2 + 6962^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (224774729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14048413 + ... + 14048428.

Almost surely, 2^224774728 is an apocalyptic number.

It is an amenable number.

224774728 is a deficient number, since it is larger than the sum of its proper divisors (196677902).

224774728 is a wasteful number, since it uses less digits than its factorization.

224774728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28096847 (or 28096843 counting only the distinct ones).

The product of its digits is 351232, while the sum is 43.

The square root of 224774728 is about 14992.4890528558. The cubic root of 224774728 is about 608.0171466194.

The spelling of 224774728 in words is "two hundred twenty-four million, seven hundred seventy-four thousand, seven hundred twenty-eight".