224491816 has 8 divisors (see below), whose sum is σ = 420922170. Its totient is φ = 112245904.

The previous prime is 224491763. The next prime is 224491819. The reversal of 224491816 is 618194422.

It can be written as a sum of positive squares in only one way, i.e., 178115716 + 46376100 = 13346^2 + 6810^2 .

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (224491819) 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, 14030731 + ... + 14030746.

Almost surely, 2^224491816 is an apocalyptic number.

It is an amenable number.

224491816 is a deficient number, since it is larger than the sum of its proper divisors (196430354).

224491816 is a wasteful number, since it uses less digits than its factorization.

224491816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28061483 (or 28061479 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 224491816 is about 14983.0509576655. The cubic root of 224491816 is about 607.7619465681.

The spelling of 224491816 in words is "two hundred twenty-four million, four hundred ninety-one thousand, eight hundred sixteen".