385693920 has 384 divisors, whose sum is σ = 1470873600. Its totient is φ = 94058496.

The previous prime is 385693897. The next prime is 385693921. The reversal of 385693920 is 29396583.

385693920 is a `hidden beast` number, since 38 + 569 + 39 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385693921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3036897 + ... + 3037023.

It is an arithmetic number, because the mean of its divisors is an integer number (3830400).

Almost surely, 2^385693920 is an apocalyptic number.

385693920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385693920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735436800).

385693920 is an abundant number, since it is smaller than the sum of its proper divisors (1085179680).

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

385693920 is a wasteful number, since it uses less digits than its factorization.

385693920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 385693920 is about 19639.0916286879. The cubic root of 385693920 is about 727.9154391981.

The spelling of 385693920 in words is "three hundred eighty-five million, six hundred ninety-three thousand, nine hundred twenty".