20240323540 has 24 divisors (see below), whose sum is σ = 42525309960. Its totient is φ = 8092199808.

The previous prime is 20240323457. The next prime is 20240323547. The reversal of 20240323540 is 4532304202.

It can be written as a sum of positive squares in 4 ways, for example, as 645363216 + 19594960324 = 25404^2 + 139982^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20240323547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203187 + ... + 285946.

It is an arithmetic number, because the mean of its divisors is an integer number (1771887915).

Almost surely, 2^20240323540 is an apocalyptic number.

20240323540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20240323540 is an abundant number, since it is smaller than the sum of its proper divisors (22284986420).

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

20240323540 is a wasteful number, since it uses less digits than its factorization.

20240323540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491211 (or 491209 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20240323540 its reverse (4532304202), we get a palindrome (24772627742).

The spelling of 20240323540 in words is "twenty billion, two hundred forty million, three hundred twenty-three thousand, five hundred forty".