386928765 has 16 divisors (see below), whose sum is σ = 687873600. Its totient is φ = 206361936.

The previous prime is 386928761. The next prime is 386928781. The reversal of 386928765 is 567829683.

It is a happy number.

It is not a de Polignac number, because 386928765 - 2² = 386928761 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386928761) 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, 1432935 + ... + 1433204.

It is an arithmetic number, because the mean of its divisors is an integer number (42992100).

Almost surely, 2^386928765 is an apocalyptic number.

It is an amenable number.

386928765 is a deficient number, since it is larger than the sum of its proper divisors (300944835).

386928765 is a wasteful number, since it uses less digits than its factorization.

386928765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866153 (or 2866147 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 386928765 is about 19670.5049503057. The cubic root of 386928765 is about 728.6914476031.

The spelling of 386928765 in words is "three hundred eighty-six million, nine hundred twenty-eight thousand, seven hundred sixty-five".