28485000 has 160 divisors (see below), whose sum is σ = 99343200. Its totient is φ = 7560000.

The previous prime is 28484999. The next prime is 28485007. The reversal of 28485000 is 58482.

It is a super-2 number, since 2×28485000² = 1622790450000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28485007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 134895 + ... + 135105.

It is an arithmetic number, because the mean of its divisors is an integer number (620895).

Almost surely, 2^28485000 is an apocalyptic number.

28485000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28485000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49671600).

28485000 is an abundant number, since it is smaller than the sum of its proper divisors (70858200).

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

28485000 is a wasteful number, since it uses less digits than its factorization.

28485000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 28485000 is about 5337.1340623972. The cubic root of 28485000 is about 305.4021390844.

The spelling of 28485000 in words is "twenty-eight million, four hundred eighty-five thousand".