38521872 has 80 divisors (see below), whose sum is σ = 115409280. Its totient is φ = 12279168.

The previous prime is 38521859. The next prime is 38521891. The reversal of 38521872 is 27812583.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7998 + ... + 11874.

It is an arithmetic number, because the mean of its divisors is an integer number (1442616).

Almost surely, 2^38521872 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 38521872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57704640).

38521872 is an abundant number, since it is smaller than the sum of its proper divisors (76887408).

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

38521872 is a wasteful number, since it uses less digits than its factorization.

38521872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917 (or 3905 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 38521872 is about 6206.5990687332. The cubic root of 38521872 is about 337.7296017908.

It can be divided in two parts, 38521 and 872, that added together give a palindrome (39393).

The spelling of 38521872 in words is "thirty-eight million, five hundred twenty-one thousand, eight hundred seventy-two".