38530520 has 128 divisors (see below), whose sum is σ = 107274240. Its totient is φ = 12165120.

The previous prime is 38530507. The next prime is 38530559. The reversal of 38530520 is 2503583.

It is a self number, because there is not a number n which added to its sum of digits gives 38530520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199544 + ... + 199736.

It is an arithmetic number, because the mean of its divisors is an integer number (838080).

Almost surely, 2^38530520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38530520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53637120).

38530520 is an abundant number, since it is smaller than the sum of its proper divisors (68743720).

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

38530520 is a wasteful number, since it uses less digits than its factorization.

38530520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 38530520 is about 6207.2957074720. The cubic root of 38530520 is about 337.7548728633.

The spelling of 38530520 in words is "thirty-eight million, five hundred thirty thousand, five hundred twenty".