28077148 has 12 divisors (see below), whose sum is σ = 53601912. Its totient is φ = 12762320.

The previous prime is 28077131. The next prime is 28077173. The reversal of 28077148 is 84177082.

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 in 3 ways as a sum of consecutive naturals, for example, 319015 + ... + 319102.

It is an arithmetic number, because the mean of its divisors is an integer number (4466826).

Almost surely, 2^28077148 is an apocalyptic number.

It is an amenable number.

28077148 is a deficient number, since it is larger than the sum of its proper divisors (25524764).

28077148 is a wasteful number, since it uses less digits than its factorization.

28077148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638132 (or 638130 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 28077148 is about 5298.7874084549. The cubic root of 28077148 is about 303.9375304464.

The spelling of 28077148 in words is "twenty-eight million, seventy-seven thousand, one hundred forty-eight".