28903648 has 24 divisors (see below), whose sum is σ = 57214080. Its totient is φ = 14373120.

The previous prime is 28903631. The next prime is 28903657. The reversal of 28903648 is 84630982.

It is a self number, because there is not a number n which added to its sum of digits gives 28903648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3748 + ... + 8476.

It is an arithmetic number, because the mean of its divisors is an integer number (2383920).

Almost surely, 2^28903648 is an apocalyptic number.

It is an amenable number.

28903648 is a deficient number, since it is larger than the sum of its proper divisors (28310432).

28903648 is a wasteful number, since it uses less digits than its factorization.

28903648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4930 (or 4922 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 28903648 is about 5376.2113053711. The cubic root of 28903648 is about 306.8910477157.

The spelling of 28903648 in words is "twenty-eight million, nine hundred three thousand, six hundred forty-eight".