385722783420 has 96 divisors (see below), whose sum is σ = 1165085365248. Its totient is φ = 94785284352.

The previous prime is 385722783401. The next prime is 385722783421. The reversal of 385722783420 is 24387227583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385722783421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36637 + ... + 879083.

It is an arithmetic number, because the mean of its divisors is an integer number (12136305888).

Almost surely, 2^385722783420 is an apocalyptic number.

385722783420 is a gapful number since it is divisible by the number (30) 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 385722783420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582542682624).

385722783420 is an abundant number, since it is smaller than the sum of its proper divisors (779362581828).

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

385722783420 is a wasteful number, since it uses less digits than its factorization.

385722783420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843059 (or 843057 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 51.

The spelling of 385722783420 in words is "three hundred eighty-five billion, seven hundred twenty-two million, seven hundred eighty-three thousand, four hundred twenty".