20420034024 has 128 divisors (see below), whose sum is σ = 58336951680. Its totient is φ = 5900697600.

The previous prime is 20420034017. The next prime is 20420034029. The reversal of 20420034024 is 42043002402.

It is not an unprimeable number, because it can be changed into a prime (20420034029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2600344 + ... + 2608184.

It is an arithmetic number, because the mean of its divisors is an integer number (455757435).

Almost surely, 2^20420034024 is an apocalyptic number.

20420034024 is a gapful number since it is divisible by the number (24) 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 20420034024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29168475840).

20420034024 is an abundant number, since it is smaller than the sum of its proper divisors (37916917656).

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

20420034024 is a wasteful number, since it uses less digits than its factorization.

20420034024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371 (or 8367 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 20420034024 its reverse (42043002402), we get a palindrome (62463036426).

The spelling of 20420034024 in words is "twenty billion, four hundred twenty million, thirty-four thousand, twenty-four".