20243130 has 16 divisors (see below), whose sum is σ = 48583584. Its totient is φ = 5398160.

The previous prime is 20243117. The next prime is 20243137. The reversal of 20243130 is 3134202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20243137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337356 + ... + 337415.

It is an arithmetic number, because the mean of its divisors is an integer number (3036474).

Almost surely, 2^20243130 is an apocalyptic number.

20243130 is an abundant number, since it is smaller than the sum of its proper divisors (28340454).

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

20243130 is a wasteful number, since it uses less digits than its factorization.

20243130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674781.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20243130 is about 4499.2366019137. The cubic root of 20243130 is about 272.5372616891.

Adding to 20243130 its reverse (3134202), we get a palindrome (23377332).

The spelling of 20243130 in words is "twenty million, two hundred forty-three thousand, one hundred thirty".