28590000 has 100 divisors (see below), whose sum is σ = 92389176. Its totient is φ = 7616000.

The previous prime is 28589993. The next prime is 28590007. The reversal of 28590000 is 9582.

It is an interprime number because it is at equal distance from previous prime (28589993) and next prime (28590007).

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (28590007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29524 + ... + 30476.

Almost surely, 2^28590000 is an apocalyptic number.

28590000 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 28590000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46194588).

28590000 is an abundant number, since it is smaller than the sum of its proper divisors (63799176).

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

28590000 is an equidigital number, since it uses as much as digits as its factorization.

28590000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 963 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 28590000 is about 5346.9617541179. The cubic root of 28590000 is about 305.7769317069.

Adding to 28590000 its reverse (9582), we get a palindrome (28599582).

The spelling of 28590000 in words is "twenty-eight million, five hundred ninety thousand".