385517340 has 96 divisors (see below), whose sum is σ = 1291671360. Its totient is φ = 94894848.

The previous prime is 385517339. The next prime is 385517351. The reversal of 385517340 is 43715583.

385517340 is a `hidden beast` number, since 38 + 551 + 73 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 385517295 and 385517304.

It is a congruent number.

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, 20439 + ... + 34478.

It is an arithmetic number, because the mean of its divisors is an integer number (13454910).

Almost surely, 2^385517340 is an apocalyptic number.

385517340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385517340 is an abundant number, since it is smaller than the sum of its proper divisors (906154020).

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

385517340 is a wasteful number, since it uses less digits than its factorization.

385517340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54948 (or 54940 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 385517340 is about 19634.5954885758. The cubic root of 385517340 is about 727.8043364798.

The spelling of 385517340 in words is "three hundred eighty-five million, five hundred seventeen thousand, three hundred forty".