28715548 has 24 divisors (see below), whose sum is σ = 52097024. Its totient is φ = 13834800.

The previous prime is 28715507. The next prime is 28715549. The reversal of 28715548 is 84551782.

It is a self number, because there is not a number n which added to its sum of digits gives 28715548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28715549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45193 + ... + 45823.

Almost surely, 2^28715548 is an apocalyptic number.

It is an amenable number.

28715548 is a deficient number, since it is larger than the sum of its proper divisors (23381476).

28715548 is a wasteful number, since it uses less digits than its factorization.

28715548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1031 counting only the distinct ones).

The product of its digits is 89600, while the sum is 40.

The square root of 28715548 is about 5358.6890187806. The cubic root of 28715548 is about 306.2238668246.

The spelling of 28715548 in words is "twenty-eight million, seven hundred fifteen thousand, five hundred forty-eight".