20234445720 has 32 divisors (see below), whose sum is σ = 60703337520. Its totient is φ = 5395852160.

The previous prime is 20234445719. The next prime is 20234445769. The reversal of 20234445720 is 2754443202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84310071 + ... + 84310310.

Almost surely, 2^20234445720 is an apocalyptic number.

20234445720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20234445720 is an abundant number, since it is smaller than the sum of its proper divisors (40468891800).

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

20234445720 is a wasteful number, since it uses less digits than its factorization.

20234445720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168620395 (or 168620391 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 33.

Adding to 20234445720 its reverse (2754443202), we get a palindrome (22988888922).

The spelling of 20234445720 in words is "twenty billion, two hundred thirty-four million, four hundred forty-five thousand, seven hundred twenty".