28862550 has 72 divisors (see below), whose sum is σ = 80084160. Its totient is φ = 7444800.

The previous prime is 28862543. The next prime is 28862563. The reversal of 28862550 is 5526882.

28862550 is a `hidden beast` number, since 28 + 8 + 625 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12916 + ... + 14984.

It is an arithmetic number, because the mean of its divisors is an integer number (1112280).

Almost surely, 2^28862550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28862550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40042080).

28862550 is an abundant number, since it is smaller than the sum of its proper divisors (51221610).

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

28862550 is a wasteful number, since it uses less digits than its factorization.

28862550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 28862550 is about 5372.3877373101. The cubic root of 28862550 is about 306.7455229369.

The spelling of 28862550 in words is "twenty-eight million, eight hundred sixty-two thousand, five hundred fifty".