20255320 has 32 divisors (see below), whose sum is σ = 46131120. Its totient is φ = 8003200.

The previous prime is 20255303. The next prime is 20255321. The reversal of 20255320 is 2355202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270 + ... + 6370.

Almost surely, 2^20255320 is an apocalyptic number.

20255320 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 20255320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23065560).

20255320 is an abundant number, since it is smaller than the sum of its proper divisors (25875800).

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

20255320 is a wasteful number, since it uses less digits than its factorization.

20255320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195 (or 6191 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20255320 is about 4500.5910722926. The cubic root of 20255320 is about 272.5919561720.

The spelling of 20255320 in words is "twenty million, two hundred fifty-five thousand, three hundred twenty".