38528809 has 4 divisors (see below), whose sum is σ = 42031440. Its totient is φ = 35026180.

The previous prime is 38528801. The next prime is 38528821. The reversal of 38528809 is 90882583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90882583 = 11 ⋅8262053.

It is a cyclic number.

It is not a de Polignac number, because 38528809 - 2³ = 38528801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38528801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751299 + ... + 1751320.

It is an arithmetic number, because the mean of its divisors is an integer number (10507860).

Almost surely, 2^38528809 is an apocalyptic number.

It is an amenable number.

38528809 is a deficient number, since it is larger than the sum of its proper divisors (3502631).

38528809 is a wasteful number, since it uses less digits than its factorization.

38528809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502630.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 38528809 is about 6207.1578842494. The cubic root of 38528809 is about 337.7498733016.

The spelling of 38528809 in words is "thirty-eight million, five hundred twenty-eight thousand, eight hundred nine".