38987172 has 72 divisors (see below), whose sum is σ = 113585472. Its totient is φ = 11044800.

The previous prime is 38987161. The next prime is 38987173. The reversal of 38987172 is 27178983.

It is not an unprimeable number, because it can be changed into a prime (38987173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32422 + ... + 33602.

It is an arithmetic number, because the mean of its divisors is an integer number (1577576).

Almost surely, 2^38987172 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 38987172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56792736).

38987172 is an abundant number, since it is smaller than the sum of its proper divisors (74598300).

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

38987172 is a wasteful number, since it uses less digits than its factorization.

38987172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1324 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 38987172 is about 6243.9708519499. The cubic root of 38987172 is about 339.0839586340.

The spelling of 38987172 in words is "thirty-eight million, nine hundred eighty-seven thousand, one hundred seventy-two".