40200020 has 48 divisors (see below), whose sum is σ = 97469568. Its totient is φ = 13641600.

The previous prime is 40199983. The next prime is 40200071. The reversal of 40200020 is 2000204.

40200020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40199980 and 40200007.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 12719 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (2030616).

Almost surely, 2^40200020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48734784).

40200020 is an abundant number, since it is smaller than the sum of its proper divisors (57269548).

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

40200020 is a wasteful number, since it uses less digits than its factorization.

40200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960 (or 2958 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 40200020 is about 6340.3485708595. The cubic root of 40200020 is about 342.5642907710.

Adding to 40200020 its reverse (2000204), we get a palindrome (42200224).

The spelling of 40200020 in words is "forty million, two hundred thousand, twenty".