28449776 has 10 divisors (see below), whose sum is σ = 55121472. Its totient is φ = 14224880.

The previous prime is 28449769. The next prime is 28449787. The reversal of 28449776 is 67794482.

It is a self number, because there is not a number n which added to its sum of digits gives 28449776.

It is a congruent number.

It is an unprimeable number.

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, 889040 + ... + 889071.

Almost surely, 2^28449776 is an apocalyptic number.

It is an amenable number.

28449776 is a deficient number, since it is larger than the sum of its proper divisors (26671696).

28449776 is a wasteful number, since it uses less digits than its factorization.

28449776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778119 (or 1778113 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 28449776 is about 5333.8331432470. The cubic root of 28449776 is about 305.2762023672.

The spelling of 28449776 in words is "twenty-eight million, four hundred forty-nine thousand, seven hundred seventy-six".