386380770 has 64 divisors (see below), whose sum is σ = 988001280. Its totient is φ = 96424128.

The previous prime is 386380747. The next prime is 386380781. The reversal of 386380770 is 77083683.

It is a happy number.

It is a Curzon 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, 43227 + ... + 51393.

It is an arithmetic number, because the mean of its divisors is an integer number (15437520).

Almost surely, 2^386380770 is an apocalyptic number.

386380770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 386380770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494000640).

386380770 is an abundant number, since it is smaller than the sum of its proper divisors (601620510).

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

386380770 is a wasteful number, since it uses less digits than its factorization.

386380770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8279.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 386380770 is about 19656.5706571619. The cubic root of 386380770 is about 728.3472775053.

The spelling of 386380770 in words is "three hundred eighty-six million, three hundred eighty thousand, seven hundred seventy".