38255440 has 80 divisors (see below), whose sum is σ = 98350848. Its totient is φ = 13764608.

The previous prime is 38255429. The next prime is 38255449. The reversal of 38255440 is 4455283.

38255440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38255449) 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 15 ways as a sum of consecutive naturals, for example, 30669 + ... + 31891.

Almost surely, 2^38255440 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 38255440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49175424).

38255440 is an abundant number, since it is smaller than the sum of its proper divisors (60095408).

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

38255440 is a wasteful number, since it uses less digits than its factorization.

38255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 38255440 is about 6185.0982207237. The cubic root of 38255440 is about 336.9491774128.

The spelling of 38255440 in words is "thirty-eight million, two hundred fifty-five thousand, four hundred forty".