28748555 has 16 divisors (see below), whose sum is σ = 37787904. Its totient is φ = 20822880.

The previous prime is 28748543. The next prime is 28748579. The reversal of 28748555 is 55584782.

It is not a de Polignac number, because 28748555 - 2¹² = 28744459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14642 + ... + 16488.

It is an arithmetic number, because the mean of its divisors is an integer number (2361744).

Almost surely, 2^28748555 is an apocalyptic number.

28748555 is a deficient number, since it is larger than the sum of its proper divisors (9039349).

28748555 is a wasteful number, since it uses less digits than its factorization.

28748555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146.

The product of its digits is 448000, while the sum is 44.

The square root of 28748555 is about 5361.7678987438. The cubic root of 28748555 is about 306.3411512652.

The spelling of 28748555 in words is "twenty-eight million, seven hundred forty-eight thousand, five hundred fifty-five".