385223296 has 64 divisors (see below), whose sum is σ = 789235200. Its totient is φ = 187223040.

The previous prime is 385223291. The next prime is 385223303. The reversal of 385223296 is 692322583.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×385223296² = 296793975562207232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (385223291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803985 + ... + 804463.

It is an arithmetic number, because the mean of its divisors is an integer number (12331800).

Almost surely, 2^385223296 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 385223296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394617600).

385223296 is an abundant number, since it is smaller than the sum of its proper divisors (404011904).

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

385223296 is a wasteful number, since it uses less digits than its factorization.

385223296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 645 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 385223296 is about 19627.1061544997. The cubic root of 385223296 is about 727.6192510473.

The spelling of 385223296 in words is "three hundred eighty-five million, two hundred twenty-three thousand, two hundred ninety-six".