20020010240 has 72 divisors (see below), whose sum is σ = 48118748328. Its totient is φ = 7980523520.

The previous prime is 20020010207. The next prime is 20020010243. The reversal of 20020010240 is 4201002002.

It can be written as a sum of positive squares in 4 ways, for example, as 2928108544 + 17091901696 = 54112^2 + 130736^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020010243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348350 + ... + 401730.

It is an arithmetic number, because the mean of its divisors is an integer number (668315949).

Almost surely, 2^20020010240 is an apocalyptic number.

20020010240 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 20020010240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24059374164).

20020010240 is an abundant number, since it is smaller than the sum of its proper divisors (28098738088).

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

20020010240 is an equidigital number, since it uses as much as digits as its factorization.

20020010240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53695 (or 53681 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20020010240 its reverse (4201002002), we get a palindrome (24221012242).

The spelling of 20020010240 in words is "twenty billion, twenty million, ten thousand, two hundred forty".