386785224 has 144 divisors (see below), whose sum is σ = 1290451500. Its totient is φ = 103993344.

The previous prime is 386785211. The next prime is 386785247. The reversal of 386785224 is 422587683.

It can be written as a sum of positive squares in 2 ways, for example, as 312653124 + 74132100 = 17682^2 + 8610^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 386785224.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 56752 + ... + 63200.

Almost surely, 2^386785224 is an apocalyptic number.

386785224 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386785224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645225750).

386785224 is an abundant number, since it is smaller than the sum of its proper divisors (903666276).

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

386785224 is a wasteful number, since it uses less digits than its factorization.

386785224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492 (or 6478 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 386785224 is about 19666.8559764900. The cubic root of 386785224 is about 728.6013276245.

The spelling of 386785224 in words is "three hundred eighty-six million, seven hundred eighty-five thousand, two hundred twenty-four".