38840064 has 72 divisors (see below), whose sum is σ = 104587392. Its totient is φ = 12794880.

The previous prime is 38840063. The next prime is 38840071. The reversal of 38840064 is 46004883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38840063) 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, 78859 + ... + 79349.

Almost surely, 2^38840064 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 38840064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52293696).

38840064 is an abundant number, since it is smaller than the sum of its proper divisors (65747328).

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

38840064 is a wasteful number, since it uses less digits than its factorization.

38840064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 38840064 is about 6232.1797149954. The cubic root of 38840064 is about 338.6569392567.

The spelling of 38840064 in words is "thirty-eight million, eight hundred forty thousand, sixty-four".