28668896 has 12 divisors (see below), whose sum is σ = 56441952. Its totient is φ = 14334432.

The previous prime is 28668859. The next prime is 28668931. The reversal of 28668896 is 69886682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447920 + ... + 447983.

It is an arithmetic number, because the mean of its divisors is an integer number (4703496).

Almost surely, 2^28668896 is an apocalyptic number.

It is an amenable number.

28668896 is a deficient number, since it is larger than the sum of its proper divisors (27773056).

28668896 is an equidigital number, since it uses as much as digits as its factorization.

28668896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895913 (or 895905 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The square root of 28668896 is about 5354.3343190354. The cubic root of 28668896 is about 306.0579439447.

It can be divided in two parts, 28668 and 896, that multiplied together give a triangular number (25686528 = T₇₁₆₇).

The spelling of 28668896 in words is "twenty-eight million, six hundred sixty-eight thousand, eight hundred ninety-six".