28858888 has 8 divisors (see below), whose sum is σ = 54110430. Its totient is φ = 14429440.

The previous prime is 28858883. The next prime is 28858889. The reversal of 28858888 is 88885882.

It can be written as a sum of positive squares in only one way, i.e., 21141604 + 7717284 = 4598^2 + 2778^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28858883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1803673 + ... + 1803688.

Almost surely, 2^28858888 is an apocalyptic number.

It is an amenable number.

28858888 is a deficient number, since it is larger than the sum of its proper divisors (25251542).

28858888 is a wasteful number, since it uses less digits than its factorization.

28858888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607367 (or 3607363 counting only the distinct ones).

The product of its digits is 2621440, while the sum is 55.

The square root of 28858888 is about 5372.0469096984. The cubic root of 28858888 is about 306.7325493821.

The spelling of 28858888 in words is "twenty-eight million, eight hundred fifty-eight thousand, eight hundred eighty-eight".