20202024400 has 120 divisors (see below), whose sum is σ = 49021148160. Its totient is φ = 8000363520.

The previous prime is 20202024371. The next prime is 20202024413. The reversal of 20202024400 is 442020202.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24971196 + ... + 24972004.

It is an arithmetic number, because the mean of its divisors is an integer number (408509568).

Almost surely, 2^20202024400 is an apocalyptic number.

20202024400 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 20202024400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24510574080).

20202024400 is an abundant number, since it is smaller than the sum of its proper divisors (28819123760).

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

20202024400 is a wasteful number, since it uses less digits than its factorization.

20202024400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20202024400 its reverse (442020202), we get a palindrome (20644044602).

The spelling of 20202024400 in words is "twenty billion, two hundred two million, twenty-four thousand, four hundred".