38578947 has 8 divisors (see below), whose sum is σ = 56114880. Its totient is φ = 23381160.

The previous prime is 38578927. The next prime is 38578999. The reversal of 38578947 is 74987583.

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

It is not a de Polignac number, because 38578947 - 2⁸ = 38578691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38578947.

It is not an unprimeable number, because it can be changed into a prime (38578907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584497 + ... + 584562.

It is an arithmetic number, because the mean of its divisors is an integer number (7014360).

Almost surely, 2^38578947 is an apocalyptic number.

38578947 is a deficient number, since it is larger than the sum of its proper divisors (17535933).

38578947 is a wasteful number, since it uses less digits than its factorization.

38578947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169073.

The product of its digits is 1693440, while the sum is 51.

The square root of 38578947 is about 6211.1952955933. The cubic root of 38578947 is about 337.8963157808.

The spelling of 38578947 in words is "thirty-eight million, five hundred seventy-eight thousand, nine hundred forty-seven".