38928317 has 4 divisors (see below), whose sum is σ = 41218236. Its totient is φ = 36638400.

The previous prime is 38928313. The next prime is 38928319. The reversal of 38928317 is 71382983.

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 35295481 + 3632836 = 5941^2 + 1906^2 .

It is not a de Polignac number, because 38928317 - 2² = 38928313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38928313) 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, 1144934 + ... + 1144967.

It is an arithmetic number, because the mean of its divisors is an integer number (10304559).

Almost surely, 2^38928317 is an apocalyptic number.

It is an amenable number.

38928317 is a deficient number, since it is larger than the sum of its proper divisors (2289919).

38928317 is a wasteful number, since it uses less digits than its factorization.

38928317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289918.

The product of its digits is 72576, while the sum is 41.

The square root of 38928317 is about 6239.2561255329. The cubic root of 38928317 is about 338.9132457555.

The spelling of 38928317 in words is "thirty-eight million, nine hundred twenty-eight thousand, three hundred seventeen".