38394972 has 216 divisors, whose sum is σ = 132263040. Its totient is φ = 9447840.

The previous prime is 38394947. The next prime is 38394973. The reversal of 38394972 is 27949383.

It is a happy number.

38394972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (326592) is a multiple of the sum of its prime divisors (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38394973) 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 71 ways as a sum of consecutive naturals, for example, 2020779 + ... + 2020797.

Almost surely, 2^38394972 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 38394972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66131520).

38394972 is an abundant number, since it is smaller than the sum of its proper divisors (93868068).

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

38394972 is a wasteful number, since it uses less digits than its factorization.

38394972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 42 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 38394972 is about 6196.3676456453. The cubic root of 38394972 is about 337.3583405494.

The spelling of 38394972 in words is "thirty-eight million, three hundred ninety-four thousand, nine hundred seventy-two".