38678287 has 4 divisors (see below), whose sum is σ = 39408120. Its totient is φ = 37948456.

The previous prime is 38678267. The next prime is 38678291. The reversal of 38678287 is 78287683.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38678287 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38678287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38678267) 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, 364837 + ... + 364942.

It is an arithmetic number, because the mean of its divisors is an integer number (9852030).

Almost surely, 2^38678287 is an apocalyptic number.

38678287 is a deficient number, since it is larger than the sum of its proper divisors (729833).

38678287 is an equidigital number, since it uses as much as digits as its factorization.

38678287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729832.

The product of its digits is 903168, while the sum is 49.

The square root of 38678287 is about 6219.1870047459. The cubic root of 38678287 is about 338.1860925688.

The spelling of 38678287 in words is "thirty-eight million, six hundred seventy-eight thousand, two hundred eighty-seven".