20202004240 has 160 divisors (see below), whose sum is σ = 51870430080. Its totient is φ = 7256371200.

The previous prime is 20202004237. The next prime is 20202004271. The reversal of 20202004240 is 4240020202.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38775180 + ... + 38775700.

It is an arithmetic number, because the mean of its divisors is an integer number (324190188).

Almost surely, 2^20202004240 is an apocalyptic number.

20202004240 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 20202004240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25935215040).

20202004240 is an abundant number, since it is smaller than the sum of its proper divisors (31668425840).

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

20202004240 is a wasteful number, since it uses less digits than its factorization.

20202004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 995 counting only the distinct ones).

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

Adding to 20202004240 its reverse (4240020202), we get a palindrome (24442024442).

The spelling of 20202004240 in words is "twenty billion, two hundred two million, four thousand, two hundred forty".