38781372 has 96 divisors (see below), whose sum is σ = 109154304. Its totient is φ = 10483200.

The previous prime is 38781317. The next prime is 38781373. The reversal of 38781372 is 27318783.

It is a self number, because there is not a number n which added to its sum of digits gives 38781372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38781373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137872 + ... + 138152.

It is an arithmetic number, because the mean of its divisors is an integer number (1137024).

Almost surely, 2^38781372 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 38781372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54577152).

38781372 is an abundant number, since it is smaller than the sum of its proper divisors (70372932).

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

38781372 is a wasteful number, since it uses less digits than its factorization.

38781372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 377 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 38781372 is about 6227.4691488598. The cubic root of 38781372 is about 338.4862694951.

The spelling of 38781372 in words is "thirty-eight million, seven hundred eighty-one thousand, three hundred seventy-two".