38530440 has 96 divisors (see below), whose sum is σ = 134872920. Its totient is φ = 9483264.

The previous prime is 38530421. The next prime is 38530441. The reversal of 38530440 is 4403583.

It is a happy number.

38530440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17791524 + 20738916 = 4218^2 + 4554^2 .

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (38530441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564 + ... + 8796.

Almost surely, 2^38530440 is an apocalyptic number.

38530440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38530440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67436460).

38530440 is an abundant number, since it is smaller than the sum of its proper divisors (96342480).

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

38530440 is a wasteful number, since it uses less digits than its factorization.

38530440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8263 (or 8256 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 38530440 is about 6207.2892634386. The cubic root of 38530440 is about 337.7546391057.

The spelling of 38530440 in words is "thirty-eight million, five hundred thirty thousand, four hundred forty".