20023500 has 96 divisors (see below), whose sum is σ = 66673152. Its totient is φ = 4574400.

The previous prime is 20023469. The next prime is 20023513. The reversal of 20023500 is 532002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9547 + ... + 11453.

It is an arithmetic number, because the mean of its divisors is an integer number (694512).

Almost surely, 2^20023500 is an apocalyptic number.

20023500 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 20023500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33336576).

20023500 is an abundant number, since it is smaller than the sum of its proper divisors (46649652).

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

20023500 is a wasteful number, since it uses less digits than its factorization.

20023500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 20023500 is about 4474.7625635334. The cubic root of 20023500 is about 271.5480347367.

Adding to 20023500 its reverse (532002), we get a palindrome (20555502).

The spelling of 20023500 in words is "twenty million, twenty-three thousand, five hundred".