20324435040 has 576 divisors, whose sum is σ = 87372020736. Its totient is φ = 4187344896.

The previous prime is 20324435039. The next prime is 20324435069. The reversal of 20324435040 is 4053442302.

20324435040 is a `hidden beast` number, since 203 + 24 + 435 + 0 + 4 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20324434995 and 20324435013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5632917 + ... + 5636523.

It is an arithmetic number, because the mean of its divisors is an integer number (151687536).

Almost surely, 2^20324435040 is an apocalyptic number.

20324435040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20324435040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43686010368).

20324435040 is an abundant number, since it is smaller than the sum of its proper divisors (67047585696).

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

20324435040 is a wasteful number, since it uses less digits than its factorization.

20324435040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691 (or 3680 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 20324435040 its reverse (4053442302), we get a palindrome (24377877342).

The spelling of 20324435040 in words is "twenty billion, three hundred twenty-four million, four hundred thirty-five thousand, forty".