20041533240 has 128 divisors (see below), whose sum is σ = 63712604160. Its totient is φ = 5025982464.

The previous prime is 20041533233. The next prime is 20041533269. The reversal of 20041533240 is 4233514002.

It is a super-2 number, since 2×20041533240² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20041533240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3144537 + ... + 3150903.

It is an arithmetic number, because the mean of its divisors is an integer number (497754720).

Almost surely, 2^20041533240 is an apocalyptic number.

20041533240 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 20041533240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31856302080).

20041533240 is an abundant number, since it is smaller than the sum of its proper divisors (43671070920).

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

20041533240 is a wasteful number, since it uses less digits than its factorization.

20041533240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7941 (or 7937 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The spelling of 20041533240 in words is "twenty billion, forty-one million, five hundred thirty-three thousand, two hundred forty".