28298850 has 48 divisors (see below), whose sum is σ = 71057952. Its totient is φ = 7452160.

The previous prime is 28298843. The next prime is 28298861. The reversal of 28298850 is 5889282.

It is a super-2 number, since 2×28298850² = 1601649822645000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 11314 + ... + 13586.

It is an arithmetic number, because the mean of its divisors is an integer number (1480374).

Almost surely, 2^28298850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28298850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35528976).

28298850 is an abundant number, since it is smaller than the sum of its proper divisors (42759102).

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

28298850 is a wasteful number, since it uses less digits than its factorization.

28298850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371 (or 2366 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 28298850 is about 5319.6663429204. Note that the first 3 decimals coincide. The cubic root of 28298850 is about 304.7354150812.

The spelling of 28298850 in words is "twenty-eight million, two hundred ninety-eight thousand, eight hundred fifty".