20034451320 has 128 divisors (see below), whose sum is σ = 64763496000. Its totient is φ = 4928753664.

The previous prime is 20034451301. The next prime is 20034451387. The reversal of 20034451320 is 2315443002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4604506 + ... + 4608854.

Almost surely, 2^20034451320 is an apocalyptic number.

20034451320 is a gapful number since it is divisible by the number (20) 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 20034451320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32381748000).

20034451320 is an abundant number, since it is smaller than the sum of its proper divisors (44729044680).

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

20034451320 is a wasteful number, since it uses less digits than its factorization.

20034451320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329 (or 7325 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20034451320 its reverse (2315443002), we get a palindrome (22349894322).

The spelling of 20034451320 in words is "twenty billion, thirty-four million, four hundred fifty-one thousand, three hundred twenty".