38689578 has 12 divisors (see below), whose sum is σ = 83827458. Its totient is φ = 12896520.

The previous prime is 38689571. The next prime is 38689579. The reversal of 38689578 is 87598683.

It is a happy number.

38689578 is a `hidden beast` number, since 3 + 8 + 68 + 9 + 578 = 666.

38689578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 38601369 + 88209 = 6213^2 + 297^2 .

It is not an unprimeable number, because it can be changed into a prime (38689571) 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 5 ways as a sum of consecutive naturals, for example, 1074693 + ... + 1074728.

Almost surely, 2^38689578 is an apocalyptic number.

38689578 is an abundant number, since it is smaller than the sum of its proper divisors (45137880).

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

38689578 is a wasteful number, since it uses less digits than its factorization.

38689578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149429 (or 2149426 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 38689578 is about 6220.0946938129. The cubic root of 38689578 is about 338.2189972290.

The spelling of 38689578 in words is "thirty-eight million, six hundred eighty-nine thousand, five hundred seventy-eight".