28681050 has 48 divisors (see below), whose sum is σ = 71459712. Its totient is φ = 7612800.

The previous prime is 28681007. The next prime is 28681063. The reversal of 28681050 is 5018682.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 28680999 and 28681017.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54790 + ... + 55310.

It is an arithmetic number, because the mean of its divisors is an integer number (1488744).

Almost surely, 2^28681050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28681050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35729856).

28681050 is an abundant number, since it is smaller than the sum of its proper divisors (42778662).

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

28681050 is a wasteful number, since it uses less digits than its factorization.

28681050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 28681050 is about 5355.4691671225. The cubic root of 28681050 is about 306.1011882876.

The spelling of 28681050 in words is "twenty-eight million, six hundred eighty-one thousand, fifty".