385665476 has 72 divisors (see below), whose sum is σ = 804920256. Its totient is φ = 161179200.

The previous prime is 385665463. The next prime is 385665479. The reversal of 385665476 is 674566583.

Its product of digits (3628800) is a multiple of the sum of its prime divisors (400).

It is not an unprimeable number, because it can be changed into a prime (385665479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2456390 + ... + 2456546.

It is an arithmetic number, because the mean of its divisors is an integer number (11179448).

Almost surely, 2^385665476 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 385665476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402460128).

385665476 is an abundant number, since it is smaller than the sum of its proper divisors (419254780).

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

385665476 is a wasteful number, since it uses less digits than its factorization.

385665476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 400 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 50.

The square root of 385665476 is about 19638.3674474229. The cubic root of 385665476 is about 727.8975447532.

The spelling of 385665476 in words is "three hundred eighty-five million, six hundred sixty-five thousand, four hundred seventy-six".