20083500 has 72 divisors (see below), whose sum is σ = 63370944. Its totient is φ = 5354400.

The previous prime is 20083499. The next prime is 20083501. The reversal of 20083500 is 538002.

It is an interprime number because it is at equal distance from previous prime (20083499) and next prime (20083501).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20083501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2269 + ... + 6731.

It is an arithmetic number, because the mean of its divisors is an integer number (880152).

Almost surely, 2^20083500 is an apocalyptic number.

20083500 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 20083500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31685472).

20083500 is an abundant number, since it is smaller than the sum of its proper divisors (43287444).

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

20083500 is a wasteful number, since it uses less digits than its factorization.

20083500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488 (or 4473 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20083500 is about 4481.4618150778. The cubic root of 20083500 is about 271.8189936160.

The spelling of 20083500 in words is "twenty million, eighty-three thousand, five hundred".