28120950 has 288 divisors, whose sum is σ = 97493760. Its totient is φ = 5702400.

The previous prime is 28120949. The next prime is 28121017. The reversal of 28120950 is 5902182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1222639 + ... + 1222661.

It is an arithmetic number, because the mean of its divisors is an integer number (338520).

Almost surely, 2^28120950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28120950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48746880).

28120950 is an abundant number, since it is smaller than the sum of its proper divisors (69372810).

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

28120950 is a wasteful number, since it uses less digits than its factorization.

28120950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 28120950 is about 5302.9190074901. The cubic root of 28120950 is about 304.0955017932.

The spelling of 28120950 in words is "twenty-eight million, one hundred twenty thousand, nine hundred fifty".