385722020 has 12 divisors (see below), whose sum is σ = 810016284. Its totient is φ = 154288800.

The previous prime is 385721989. The next prime is 385722023. The reversal of 385722020 is 20227583.

It can be written as a sum of positive squares in 2 ways, for example, as 218330176 + 167391844 = 14776^2 + 12938^2 .

It is not an unprimeable number, because it can be changed into a prime (385722023) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9643031 + ... + 9643070.

It is an arithmetic number, because the mean of its divisors is an integer number (67501357).

Almost surely, 2^385722020 is an apocalyptic number.

It is an amenable number.

385722020 is an abundant number, since it is smaller than the sum of its proper divisors (424294264).

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

385722020 is a wasteful number, since it uses less digits than its factorization.

385722020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19286110 (or 19286108 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 385722020 is about 19639.8070255285. The cubic root of 385722020 is about 727.9331163647.

The spelling of 385722020 in words is "three hundred eighty-five million, seven hundred twenty-two thousand, twenty".