385204400 has 60 divisors (see below), whose sum is σ = 1057668912. Its totient is φ = 132069120.

The previous prime is 385204399. The next prime is 385204403. The reversal of 385204400 is 4402583.

It is a self number, because there is not a number n which added to its sum of digits gives 385204400.

It is not an unprimeable number, because it can be changed into a prime (385204403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65987 + ... + 71586.

Almost surely, 2^385204400 is an apocalyptic number.

It is an amenable number.

385204400 is an abundant number, since it is smaller than the sum of its proper divisors (672464512).

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

385204400 is a wasteful number, since it uses less digits than its factorization.

385204400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137598 (or 137587 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 385204400 is about 19626.6247735060. The cubic root of 385204400 is about 727.6073537761.

Adding to 385204400 its reverse (4402583), we get a palindrome (389606983).

The spelling of 385204400 in words is "three hundred eighty-five million, two hundred four thousand, four hundred".