385882780 has 24 divisors (see below), whose sum is σ = 853004880. Its totient is φ = 146229120.

The previous prime is 385882751. The next prime is 385882807. The reversal of 385882780 is 87288583.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507361 + ... + 508120.

It is an arithmetic number, because the mean of its divisors is an integer number (35541870).

Almost surely, 2^385882780 is an apocalyptic number.

It is an amenable number.

385882780 is an abundant number, since it is smaller than the sum of its proper divisors (467122100).

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

385882780 is a wasteful number, since it uses less digits than its factorization.

385882780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015509 (or 1015507 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The square root of 385882780 is about 19643.8993074186. The cubic root of 385882780 is about 728.0342308704.

The spelling of 385882780 in words is "three hundred eighty-five million, eight hundred eighty-two thousand, seven hundred eighty".