38487481 has 4 divisors (see below), whose sum is σ = 38687092. Its totient is φ = 38287872.

The previous prime is 38487469. The next prime is 38487497. The reversal of 38487481 is 18478483.

38487481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18318400 + 20169081 = 4280^2 + 4491^2 .

It is a cyclic number.

It is not a de Polignac number, because 38487481 - 2⁷ = 38487353 is a prime.

It is a super-2 number, since 2×38487481² = 2962572387450722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38487431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99516 + ... + 99901.

It is an arithmetic number, because the mean of its divisors is an integer number (9671773).

Almost surely, 2^38487481 is an apocalyptic number.

It is an amenable number.

38487481 is a deficient number, since it is larger than the sum of its proper divisors (199611).

38487481 is a wasteful number, since it uses less digits than its factorization.

38487481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199610.

The product of its digits is 172032, while the sum is 43.

The square root of 38487481 is about 6203.8279312051. The cubic root of 38487481 is about 337.6290674165.

The spelling of 38487481 in words is "thirty-eight million, four hundred eighty-seven thousand, four hundred eighty-one".