28779248 has 10 divisors (see below), whose sum is σ = 55759824. Its totient is φ = 14389616.

The previous prime is 28779227. The next prime is 28779271. The reversal of 28779248 is 84297782.

It is a happy number.

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, 899336 + ... + 899367.

Almost surely, 2^28779248 is an apocalyptic number.

It is an amenable number.

28779248 is a deficient number, since it is larger than the sum of its proper divisors (26980576).

28779248 is a wasteful number, since it uses less digits than its factorization.

28779248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798711 (or 1798705 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 28779248 is about 5364.6293441393. The cubic root of 28779248 is about 306.4501327981.

The spelling of 28779248 in words is "twenty-eight million, seven hundred seventy-nine thousand, two hundred forty-eight".