20602243200 has 768 divisors, whose sum is σ = 86548746240. Its totient is φ = 4182835200.

The previous prime is 20602243199. The next prime is 20602243201. The reversal of 20602243200 is 234220602.

It is an interprime number because it is at equal distance from previous prime (20602243199) and next prime (20602243201).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20602243201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 34742104 + ... + 34742696.

It is an arithmetic number, because the mean of its divisors is an integer number (112693680).

Almost surely, 2^20602243200 is an apocalyptic number.

20602243200 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 20602243200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43274373120).

20602243200 is an abundant number, since it is smaller than the sum of its proper divisors (65946503040).

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

20602243200 is a wasteful number, since it uses less digits than its factorization.

20602243200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20602243200 its reverse (234220602), we get a palindrome (20836463802).

The spelling of 20602243200 in words is "twenty billion, six hundred two million, two hundred forty-three thousand, two hundred".