20263000 has 64 divisors (see below), whose sum is σ = 49533120. Its totient is φ = 7744000.

The previous prime is 20262989. The next prime is 20263007. The reversal of 20263000 is 36202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20263007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22560 + ... + 23440.

It is an arithmetic number, because the mean of its divisors is an integer number (773955).

Almost surely, 2^20263000 is an apocalyptic number.

20263000 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 20263000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24766560).

20263000 is an abundant number, since it is smaller than the sum of its proper divisors (29270120).

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

20263000 is a wasteful number, since it uses less digits than its factorization.

20263000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20263000 is about 4501.4442126944. Note that the first 3 decimals coincide. The cubic root of 20263000 is about 272.6264037754.

Adding to 20263000 its reverse (36202), we get a palindrome (20299202).

The spelling of 20263000 in words is "twenty million, two hundred sixty-three thousand".