20243002390 has 32 divisors (see below), whose sum is σ = 39294440640. Its totient is φ = 7464023424.

The previous prime is 20243002349. The next prime is 20243002391. The reversal of 20243002390 is 9320034202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243002391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12585 + ... + 201604.

It is an arithmetic number, because the mean of its divisors is an integer number (1227951270).

Almost surely, 2^20243002390 is an apocalyptic number.

20243002390 is a deficient number, since it is larger than the sum of its proper divisors (19051438250).

20243002390 is a wasteful number, since it uses less digits than its factorization.

20243002390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214936.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20243002390 its reverse (9320034202), we get a palindrome (29563036592).

The spelling of 20243002390 in words is "twenty billion, two hundred forty-three million, two thousand, three hundred ninety".