386622720 has 432 divisors, whose sum is σ = 1526720832. Its totient is φ = 92897280.

The previous prime is 386622703. The next prime is 386622737. The reversal of 386622720 is 27226683.

386622720 is a `hidden beast` number, since 3 + 8 + 6 + 622 + 7 + 20 = 666.

386622720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (386622703) and next prime (386622737).

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3421384 + ... + 3421496.

It is an arithmetic number, because the mean of its divisors is an integer number (3534076).

Almost surely, 2^386622720 is an apocalyptic number.

386622720 is a gapful number since it is divisible by the number (30) 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 386622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763360416).

386622720 is an abundant number, since it is smaller than the sum of its proper divisors (1140098112).

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

386622720 is a wasteful number, since it uses less digits than its factorization.

386622720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 386622720 is about 19662.7241245968. The cubic root of 386622720 is about 728.4992751087.

The spelling of 386622720 in words is "three hundred eighty-six million, six hundred twenty-two thousand, seven hundred twenty".