202320020 has 72 divisors (see below), whose sum is σ = 496419840. Its totient is φ = 69061440.

The previous prime is 202319989. The next prime is 202320073. The reversal of 202320020 is 20023202.

It is a junction number, because it is equal to n+sod(n) for n = 202319983 and 202320010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 422141 + ... + 422619.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^202320020 is an apocalyptic number.

202320020 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 202320020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248209920).

202320020 is an abundant number, since it is smaller than the sum of its proper divisors (294099820).

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

202320020 is a wasteful number, since it uses less digits than its factorization.

202320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 202320020 is about 14223.9242123965. The cubic root of 202320020 is about 587.0561198228.

Adding to 202320020 its reverse (20023202), we get a palindrome (222343222).

The spelling of 202320020 in words is "two hundred two million, three hundred twenty thousand, twenty".