20201032434 has 64 divisors (see below), whose sum is σ = 46246007808. Its totient is φ = 5822942400.

The previous prime is 20201032433. The next prime is 20201032463. The reversal of 20201032434 is 43423010202.

It is a super-2 number, since 2×20201032434² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201032434.

It is not an unprimeable number, because it can be changed into a prime (20201032433) 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, 237997 + ... + 311519.

It is an arithmetic number, because the mean of its divisors is an integer number (722593872).

Almost surely, 2^20201032434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20201032434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23123003904).

20201032434 is an abundant number, since it is smaller than the sum of its proper divisors (26044975374).

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

20201032434 is a wasteful number, since it uses less digits than its factorization.

20201032434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73743.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20201032434 its reverse (43423010202), we get a palindrome (63624042636).

The spelling of 20201032434 in words is "twenty billion, two hundred one million, thirty-two thousand, four hundred thirty-four".