385820090 has 32 divisors (see below), whose sum is σ = 716394240. Its totient is φ = 149494464.

The previous prime is 385820087. The next prime is 385820107. The reversal of 385820090 is 90028583.

It is a self number, because there is not a number n which added to its sum of digits gives 385820090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86249 + ... + 90611.

It is an arithmetic number, because the mean of its divisors is an integer number (22387320).

Almost surely, 2^385820090 is an apocalyptic number.

385820090 is a deficient number, since it is larger than the sum of its proper divisors (330574150).

385820090 is a wasteful number, since it uses less digits than its factorization.

385820090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 385820090 is about 19642.3035818104. The cubic root of 385820090 is about 727.9948035796.

The spelling of 385820090 in words is "three hundred eighty-five million, eight hundred twenty thousand, ninety".