28885550 has 36 divisors (see below), whose sum is σ = 57102000. Its totient is φ = 10869120.

The previous prime is 28885547. The next prime is 28885603. The reversal of 28885550 is 5558882.

It is a junction number, because it is equal to n+sod(n) for n = 28885498 and 28885507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13451 + ... + 15449.

Almost surely, 2^28885550 is an apocalyptic number.

28885550 is a deficient number, since it is larger than the sum of its proper divisors (28216450).

28885550 is a wasteful number, since it uses less digits than its factorization.

28885550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 41.

The square root of 28885550 is about 5374.5278862427. The cubic root of 28885550 is about 306.8269811335.

The spelling of 28885550 in words is "twenty-eight million, eight hundred eighty-five thousand, five hundred fifty".