20033431452 has 72 divisors (see below), whose sum is σ = 51704596944. Its totient is φ = 6538861056.

The previous prime is 20033431433. The next prime is 20033431463. The reversal of 20033431452 is 25413433002.

20033431452 is a `hidden beast` number, since 200 + 3 + 3 + 4 + 3 + 1 + 452 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307978 + ... + 367310.

It is an arithmetic number, because the mean of its divisors is an integer number (718119402).

Almost surely, 2^20033431452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20033431452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25852298472).

20033431452 is an abundant number, since it is smaller than the sum of its proper divisors (31671165492).

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

20033431452 is a wasteful number, since it uses less digits than its factorization.

20033431452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59539 (or 59534 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20033431452 its reverse (25413433002), we get a palindrome (45446864454).

The spelling of 20033431452 in words is "twenty billion, thirty-three million, four hundred thirty-one thousand, four hundred fifty-two".