20000245140 has 192 divisors, whose sum is σ = 64481894400. Its totient is φ = 5142953088.

The previous prime is 20000245099. The next prime is 20000245159. The reversal of 20000245140 is 4154200002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1828929 + ... + 1839831.

It is an arithmetic number, because the mean of its divisors is an integer number (335843200).

Almost surely, 2^20000245140 is an apocalyptic number.

20000245140 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 20000245140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32240947200).

20000245140 is an abundant number, since it is smaller than the sum of its proper divisors (44481649260).

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

20000245140 is a wasteful number, since it uses less digits than its factorization.

20000245140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11043 (or 11035 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

Adding to 20000245140 its reverse (4154200002), we get a palindrome (24154445142).

The spelling of 20000245140 in words is "twenty billion, two hundred forty-five thousand, one hundred forty".