20224312040 has 32 divisors (see below), whose sum is σ = 45635870880. Its totient is φ = 8066405952.

The previous prime is 20224312037. The next prime is 20224312049. The reversal of 20224312040 is 4021342202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (20224312049) 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 7 ways as a sum of consecutive naturals, for example, 714662 + ... + 742421.

It is an arithmetic number, because the mean of its divisors is an integer number (1426120965).

Almost surely, 2^20224312040 is an apocalyptic number.

20224312040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20224312040 is an abundant number, since it is smaller than the sum of its proper divisors (25411558840).

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

20224312040 is a wasteful number, since it uses less digits than its factorization.

20224312040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457441 (or 1457437 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20224312040 its reverse (4021342202), we get a palindrome (24245654242).

The spelling of 20224312040 in words is "twenty billion, two hundred twenty-four million, three hundred twelve thousand, forty".