38813778 has 24 divisors (see below), whose sum is σ = 86053968. Its totient is φ = 12636792.

The previous prime is 38813743. The next prime is 38813779. The reversal of 38813778 is 87731883.

38813778 is nontrivially palindromic in base 16.

It is not an unprimeable number, because it can be changed into a prime (38813779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24300 + ... + 25847.

It is an arithmetic number, because the mean of its divisors is an integer number (3585582).

Almost surely, 2^38813778 is an apocalyptic number.

38813778 is an abundant number, since it is smaller than the sum of its proper divisors (47240190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38813778 is a wasteful number, since it uses less digits than its factorization.

38813778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50198 (or 50195 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 38813778 is about 6230.0704650911. The cubic root of 38813778 is about 338.5805237865.

The spelling of 38813778 in words is "thirty-eight million, eight hundred thirteen thousand, seven hundred seventy-eight".