385682520 has 64 divisors (see below), whose sum is σ = 1217952000. Its totient is φ = 97435008.

The previous prime is 385682509. The next prime is 385682527. The reversal of 385682520 is 25286583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385682527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82300 + ... + 86859.

It is an arithmetic number, because the mean of its divisors is an integer number (19030500).

Almost surely, 2^385682520 is an apocalyptic number.

385682520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385682520 is an abundant number, since it is smaller than the sum of its proper divisors (832269480).

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

385682520 is a wasteful number, since it uses less digits than its factorization.

385682520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169192 (or 169188 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 385682520 is about 19638.8013890869. The cubic root of 385682520 is about 727.9082674337.

The spelling of 385682520 in words is "three hundred eighty-five million, six hundred eighty-two thousand, five hundred twenty".