383840020 has 24 divisors (see below), whose sum is σ = 806690304. Its totient is φ = 153416736.

The previous prime is 383839979. The next prime is 383840053. The reversal of 383840020 is 20048383.

It is a congruent 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, 21717 + ... + 35203.

It is an arithmetic number, because the mean of its divisors is an integer number (33612096).

Almost surely, 2^383840020 is an apocalyptic number.

It is an amenable number.

383840020 is an abundant number, since it is smaller than the sum of its proper divisors (422850284).

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

383840020 is a wasteful number, since it uses less digits than its factorization.

383840020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14919 (or 14917 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 383840020 is about 19591.8355444302. The cubic root of 383840020 is about 726.7472845870.

The spelling of 383840020 in words is "three hundred eighty-three million, eight hundred forty thousand, twenty".