38940288 has 64 divisors (see below), whose sum is σ = 107956800. Its totient is φ = 12412928.

The previous prime is 38940281. The next prime is 38940313. The reversal of 38940288 is 88204983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (38940281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6628 + ... + 11036.

It is an arithmetic number, because the mean of its divisors is an integer number (1686825).

Almost surely, 2^38940288 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 38940288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53978400).

38940288 is an abundant number, since it is smaller than the sum of its proper divisors (69016512).

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

38940288 is a wasteful number, since it uses less digits than its factorization.

38940288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449 (or 4437 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 38940288 is about 6240.2153808983. The cubic root of 38940288 is about 338.9479823772.

The spelling of 38940288 in words is "thirty-eight million, nine hundred forty thousand, two hundred eighty-eight".