224004001778 has 6 divisors (see below), whose sum is σ = 336007006671. Its totient is φ = 112001666222.

The previous prime is 224004001751. The next prime is 224004001783. The reversal of 224004001778 is 877100400422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 112002000889 + 112002000889 = 334667^2 + 334667^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=334667.

It is a super-2 number, since 2×224004001778² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 502001 + ... + 836667.

Almost surely, 2^224004001778 is an apocalyptic number.

224004001778 is a deficient number, since it is larger than the sum of its proper divisors (112003004893).

224004001778 is an frugal number, since it uses more digits than its factorization.

224004001778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669336 (or 334669 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The spelling of 224004001778 in words is "two hundred twenty-four billion, four million, one thousand, seven hundred seventy-eight".