386433730 has 8 divisors (see below), whose sum is σ = 695580732. Its totient is φ = 154573488.

The previous prime is 386433721. The next prime is 386433731. The reversal of 386433730 is 37334683.

It can be written as a sum of positive squares in 2 ways, for example, as 379977049 + 6456681 = 19493^2 + 2541^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 386433730.

It is not an unprimeable number, because it can be changed into a prime (386433731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19321677 + ... + 19321696.

Almost surely, 2^386433730 is an apocalyptic number.

386433730 is a deficient number, since it is larger than the sum of its proper divisors (309147002).

386433730 is a wasteful number, since it uses less digits than its factorization.

386433730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38643380.

The product of its (nonzero) digits is 108864, while the sum is 37.

The square root of 386433730 is about 19657.9177432403. The cubic root of 386433730 is about 728.3805534104.

The spelling of 386433730 in words is "three hundred eighty-six million, four hundred thirty-three thousand, seven hundred thirty".