38742581 has 8 divisors (see below), whose sum is σ = 39916800. Its totient is φ = 37579360.

The previous prime is 38742563. The next prime is 38742593. The reversal of 38742581 is 18524783.

38742581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38742581 - 2¹⁰ = 38741557 is a prime.

It is a super-2 number, since 2×38742581² = 3001975165083122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38742551) 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 7 ways as a sum of consecutive naturals, for example, 4700 + ... + 9978.

It is an arithmetic number, because the mean of its divisors is an integer number (4989600).

Almost surely, 2^38742581 is an apocalyptic number.

It is an amenable number.

38742581 is a deficient number, since it is larger than the sum of its proper divisors (1174219).

38742581 is a wasteful number, since it uses less digits than its factorization.

38742581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5499.

The product of its digits is 53760, while the sum is 38.

The square root of 38742581 is about 6224.3538620487. The cubic root of 38742581 is about 338.3733750781.

The spelling of 38742581 in words is "thirty-eight million, seven hundred forty-two thousand, five hundred eighty-one".