28868550 has 48 divisors (see below), whose sum is σ = 75812112. Its totient is φ = 7244800.

The previous prime is 28868537. The next prime is 28868557. The reversal of 28868550 is 5586882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28868557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3111 + ... + 8210.

It is an arithmetic number, because the mean of its divisors is an integer number (1579419).

Almost surely, 2^28868550 is an apocalyptic number.

28868550 is an abundant number, since it is smaller than the sum of its proper divisors (46943562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28868550 is a wasteful number, since it uses less digits than its factorization.

28868550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11353 (or 11348 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 28868550 is about 5372.9461192162. The cubic root of 28868550 is about 306.7667770721.

The spelling of 28868550 in words is "twenty-eight million, eight hundred sixty-eight thousand, five hundred fifty".