20243020 has 24 divisors (see below), whose sum is σ = 48583584. Its totient is φ = 6940416.

The previous prime is 20243017. The next prime is 20243021. The reversal of 20243020 is 2034202.

It is not an unprimeable number, because it can be changed into a prime (20243021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 72157 + ... + 72436.

It is an arithmetic number, because the mean of its divisors is an integer number (2024316).

Almost surely, 2^20243020 is an apocalyptic number.

20243020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20243020 is an abundant number, since it is smaller than the sum of its proper divisors (28340564).

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

20243020 is a wasteful number, since it uses less digits than its factorization.

20243020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144609 (or 144607 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20243020 is about 4499.2243776011. The cubic root of 20243020 is about 272.5367680376.

Adding to 20243020 its reverse (2034202), we get a palindrome (22277222).

The spelling of 20243020 in words is "twenty million, two hundred forty-three thousand, twenty".