20003820040 has 32 divisors (see below), whose sum is σ = 45550874880. Its totient is φ = 7905122752.

The previous prime is 20003820037. The next prime is 20003820059. The reversal of 20003820040 is 4002830002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3009304 + ... + 3015943.

It is an arithmetic number, because the mean of its divisors is an integer number (1423464840).

Almost surely, 2^20003820040 is an apocalyptic number.

20003820040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20003820040 is an abundant number, since it is smaller than the sum of its proper divisors (25547054840).

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

20003820040 is a wasteful number, since it uses less digits than its factorization.

20003820040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025341 (or 6025337 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The spelling of 20003820040 in words is "twenty billion, three million, eight hundred twenty thousand, forty".