38281872 has 20 divisors (see below), whose sum is σ = 98894960. Its totient is φ = 12760608.

The previous prime is 38281849. The next prime is 38281877. The reversal of 38281872 is 27818283.

It is a self number, because there is not a number n which added to its sum of digits gives 38281872.

It is not an unprimeable number, because it can be changed into a prime (38281877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398722 + ... + 398817.

It is an arithmetic number, because the mean of its divisors is an integer number (4944748).

Almost surely, 2^38281872 is an apocalyptic number.

It is an amenable number.

38281872 is an abundant number, since it is smaller than the sum of its proper divisors (60613088).

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

38281872 is a wasteful number, since it uses less digits than its factorization.

38281872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797550 (or 797544 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 38281872 is about 6187.2346003687. The cubic root of 38281872 is about 337.0267628075.

The spelling of 38281872 in words is "thirty-eight million, two hundred eighty-one thousand, eight hundred seventy-two".