28896222866 has 24 divisors (see below), whose sum is σ = 50682241980. Its totient is φ = 12319921152.

The previous prime is 28896222863. The next prime is 28896222919. The reversal of 28896222866 is 66822269882.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28071327025 + 824895841 = 167545^2 + 28721^2 .

It is a hoax number, since the sum of its digits (59) 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 (28896222863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 744971 + ... + 782798.

Almost surely, 2^28896222866 is an apocalyptic number.

28896222866 is a deficient number, since it is larger than the sum of its proper divisors (21786019114).

28896222866 is a wasteful number, since it uses less digits than its factorization.

28896222866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527978 (or 1527971 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 59.

The spelling of 28896222866 in words is "twenty-eight billion, eight hundred ninety-six million, two hundred twenty-two thousand, eight hundred sixty-six".