38872521 has 16 divisors (see below), whose sum is σ = 57849600. Its totient is φ = 25797744.

The previous prime is 38872513. The next prime is 38872549. The reversal of 38872521 is 12527883.

It is not a de Polignac number, because 38872521 - 2³ = 38872513 is a prime.

It is a super-2 number, since 2×38872521² = 3022145777790882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38872121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3040 + ... + 9326.

It is an arithmetic number, because the mean of its divisors is an integer number (3615600).

Almost surely, 2^38872521 is an apocalyptic number.

It is an amenable number.

38872521 is a deficient number, since it is larger than the sum of its proper divisors (18977079).

38872521 is a wasteful number, since it uses less digits than its factorization.

38872521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6525 (or 6519 counting only the distinct ones).

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

The square root of 38872521 is about 6234.7831558122. The cubic root of 38872521 is about 338.7512467558.

It can be divided in two parts, 38872 and 521, that added together give a palindrome (39393).

The spelling of 38872521 in words is "thirty-eight million, eight hundred seventy-two thousand, five hundred twenty-one".