28060890 has 128 divisors (see below), whose sum is σ = 82059264. Its totient is φ = 6048000.

The previous prime is 28060867. The next prime is 28060909. The reversal of 28060890 is 9806082.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132885 + ... + 133095.

It is an arithmetic number, because the mean of its divisors is an integer number (641088).

Almost surely, 2^28060890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28060890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41029632).

28060890 is an abundant number, since it is smaller than the sum of its proper divisors (53998374).

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

28060890 is a wasteful number, since it uses less digits than its factorization.

28060890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 28060890 is about 5297.2530617293. The cubic root of 28060890 is about 303.8788543724.

The spelling of 28060890 in words is "twenty-eight million, sixty thousand, eight hundred ninety".