40020403332 has 192 divisors, whose sum is σ = 119156083200. Its totient is φ = 10168381440.

The previous prime is 40020403331. The next prime is 40020403337. The reversal of 40020403332 is 23330402004.

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

It is a junction number, because it is equal to n+sod(n) for n = 40020403299 and 40020403308.

It is not an unprimeable number, because it can be changed into a prime (40020403331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18017982 + ... + 18020202.

It is an arithmetic number, because the mean of its divisors is an integer number (620604600).

Almost surely, 2^40020403332 is an apocalyptic number.

40020403332 is a gapful number since it is divisible by the number (42) 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 40020403332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59578041600).

40020403332 is an abundant number, since it is smaller than the sum of its proper divisors (79135679868).

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

40020403332 is a wasteful number, since it uses less digits than its factorization.

40020403332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846 (or 2844 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 40020403332 its reverse (23330402004), we get a palindrome (63350805336).

The spelling of 40020403332 in words is "forty billion, twenty million, four hundred three thousand, three hundred thirty-two".