28484850 has 48 divisors (see below), whose sum is σ = 71995392. Its totient is φ = 7450560.

The previous prime is 28484839. The next prime is 28484851. The reversal of 28484850 is 5848482.

It is a super-2 number, since 2×28484850² = 1622773359045000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28484799 and 28484808.

It is not an unprimeable number, because it can be changed into a prime (28484851) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6159 + ... + 9741.

It is an arithmetic number, because the mean of its divisors is an integer number (1499904).

Almost surely, 2^28484850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28484850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35997696).

28484850 is an abundant number, since it is smaller than the sum of its proper divisors (43510542).

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

28484850 is a wasteful number, since it uses less digits than its factorization.

28484850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651 (or 3646 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 28484850 is about 5337.1200098930. The cubic root of 28484850 is about 305.4016030081.

The spelling of 28484850 in words is "twenty-eight million, four hundred eighty-four thousand, eight hundred fifty".