38423878 has 4 divisors (see below), whose sum is σ = 57635820. Its totient is φ = 19211938.

The previous prime is 38423873. The next prime is 38423899. The reversal of 38423878 is 87832483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87832483 = 499 ⋅176017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38423873) 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 as a sum of consecutive naturals, namely, 9605968 + ... + 9605971.

It is an arithmetic number, because the mean of its divisors is an integer number (14408955).

Almost surely, 2^38423878 is an apocalyptic number.

38423878 is a deficient number, since it is larger than the sum of its proper divisors (19211942).

38423878 is a wasteful number, since it uses less digits than its factorization.

38423878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19211941.

The product of its digits is 258048, while the sum is 43.

The square root of 38423878 is about 6198.6997023569. The cubic root of 38423878 is about 337.4429803993.

The spelling of 38423878 in words is "thirty-eight million, four hundred twenty-three thousand, eight hundred seventy-eight".