20022440234 has 8 divisors (see below), whose sum is σ = 31800346308. Its totient is φ = 9422324800.

The previous prime is 20022440213. The next prime is 20022440237. The reversal of 20022440234 is 43204422002.

It can be written as a sum of positive squares in 2 ways, for example, as 19809718009 + 212722225 = 140747^2 + 14585^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20022440234² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20022440237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294447617 + ... + 294447684.

Almost surely, 2^20022440234 is an apocalyptic number.

20022440234 is a deficient number, since it is larger than the sum of its proper divisors (11777906074).

20022440234 is a wasteful number, since it uses less digits than its factorization.

20022440234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588895320.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 20022440234 its reverse (43204422002), we get a palindrome (63226862236).

The spelling of 20022440234 in words is "twenty billion, twenty-two million, four hundred forty thousand, two hundred thirty-four".