384906522 has 128 divisors (see below), whose sum is σ = 1088317440. Its totient is φ = 87402240.

The previous prime is 384906521. The next prime is 384906539. The reversal of 384906522 is 225609483.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (384906521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112428 + ... + 115800.

It is an arithmetic number, because the mean of its divisors is an integer number (8502480).

Almost surely, 2^384906522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 384906522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544158720).

384906522 is an abundant number, since it is smaller than the sum of its proper divisors (703410918).

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

384906522 is a wasteful number, since it uses less digits than its factorization.

384906522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 384906522 is about 19619.0346857331. The cubic root of 384906522 is about 727.4197528425.

The spelling of 384906522 in words is "three hundred eighty-four million, nine hundred six thousand, five hundred twenty-two".