385257215 has 8 divisors (see below), whose sum is σ = 528352800. Its totient is φ = 264176352.

The previous prime is 385257211. The next prime is 385257221. The reversal of 385257215 is 512752583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 385257215 - 2² = 385257211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385257211) 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, 5503640 + ... + 5503709.

It is an arithmetic number, because the mean of its divisors is an integer number (66044100).

Almost surely, 2^385257215 is an apocalyptic number.

385257215 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

385257215 is a deficient number, since it is larger than the sum of its proper divisors (143095585).

385257215 is a wasteful number, since it uses less digits than its factorization.

385257215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11007361.

The product of its digits is 84000, while the sum is 38.

The square root of 385257215 is about 19627.9702210901. The cubic root of 385257215 is about 727.6406061015.

The spelling of 385257215 in words is "three hundred eighty-five million, two hundred fifty-seven thousand, two hundred fifteen".