385445424 has 160 divisors (see below), whose sum is σ = 1242142720. Its totient is φ = 100279296.

The previous prime is 385445393. The next prime is 385445441. The reversal of 385445424 is 424544583.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344514 + ... + 345630.

It is an arithmetic number, because the mean of its divisors is an integer number (7763392).

Almost surely, 2^385445424 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 385445424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621071360).

385445424 is an abundant number, since it is smaller than the sum of its proper divisors (856697296).

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

385445424 is a wasteful number, since it uses less digits than its factorization.

385445424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1221 counting only the distinct ones).

The product of its digits is 307200, while the sum is 39.

The square root of 385445424 is about 19632.7640438121. The cubic root of 385445424 is about 727.7590777879.

The spelling of 385445424 in words is "three hundred eighty-five million, four hundred forty-five thousand, four hundred twenty-four".