385716980 has 48 divisors (see below), whose sum is σ = 892442880. Its totient is φ = 138864000.

The previous prime is 385716979. The next prime is 385716997. The reversal of 385716980 is 89617583.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13541 + ... + 30899.

It is an arithmetic number, because the mean of its divisors is an integer number (18592560).

Almost surely, 2^385716980 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 385716980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446221440).

385716980 is an abundant number, since it is smaller than the sum of its proper divisors (506725900).

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

385716980 is a wasteful number, since it uses less digits than its factorization.

385716980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17480 (or 17478 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 385716980 is about 19639.6787142764. The cubic root of 385716980 is about 727.9299458614.

The spelling of 385716980 in words is "three hundred eighty-five million, seven hundred sixteen thousand, nine hundred eighty".