28776448 has 24 divisors (see below), whose sum is σ = 57542940. Its totient is φ = 14387200.

The previous prime is 28776443. The next prime is 28776457. The reversal of 28776448 is 84467782.

It is a junction number, because it is equal to n+sod(n) for n = 28776398 and 28776407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28776443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978 + ... + 9073.

Almost surely, 2^28776448 is an apocalyptic number.

It is an amenable number.

28776448 is a deficient number, since it is larger than the sum of its proper divisors (28766492).

28776448 is an equidigital number, since it uses as much as digits as its factorization.

28776448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14073 (or 14053 counting only the distinct ones).

The product of its digits is 602112, while the sum is 46.

The square root of 28776448 is about 5364.3683691559. The cubic root of 28776448 is about 306.4401940603.

The spelling of 28776448 in words is "twenty-eight million, seven hundred seventy-six thousand, four hundred forty-eight".