385705122 has 32 divisors (see below), whose sum is σ = 862069824. Its totient is φ = 114028800.

The previous prime is 385705109. The next prime is 385705127. The reversal of 385705122 is 221507583.

It is a super-2 number, since 2×385705122² = 297536882274069768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (385705127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68563 + ... + 73974.

It is an arithmetic number, because the mean of its divisors is an integer number (26939682).

Almost surely, 2^385705122 is an apocalyptic number.

385705122 is an abundant number, since it is smaller than the sum of its proper divisors (476364702).

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

385705122 is a wasteful number, since it uses less digits than its factorization.

385705122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142594.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 385705122 is about 19639.3768231072. The cubic root of 385705122 is about 727.9224862626.

It can be divided in two parts, 385 and 705122, that added together give a palindrome (705507).

The spelling of 385705122 in words is "three hundred eighty-five million, seven hundred five thousand, one hundred twenty-two".