38320530 has 128 divisors (see below), whose sum is σ = 105062400. Its totient is φ = 8895744.

The previous prime is 38320523. The next prime is 38320531. The reversal of 38320530 is 3502383.

It is a self number, because there is not a number n which added to its sum of digits gives 38320530.

It is not an unprimeable number, because it can be changed into a prime (38320531) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 485031 + ... + 485109.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^38320530 is an apocalyptic number.

38320530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38320530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52531200).

38320530 is an abundant number, since it is smaller than the sum of its proper divisors (66741870).

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

38320530 is a wasteful number, since it uses less digits than its factorization.

38320530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 38320530 is about 6190.3578248757. The cubic root of 38320530 is about 337.1401706842.

The spelling of 38320530 in words is "thirty-eight million, three hundred twenty thousand, five hundred thirty".