38881855 has 4 divisors (see below), whose sum is σ = 46658232. Its totient is φ = 31105480.

The previous prime is 38881849. The next prime is 38881859. The reversal of 38881855 is 55818883.

38881855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 38881855 - 2²³ = 30493247 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 (38881859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3888181 + ... + 3888190.

It is an arithmetic number, because the mean of its divisors is an integer number (11664558).

Almost surely, 2^38881855 is an apocalyptic number.

38881855 is a deficient number, since it is larger than the sum of its proper divisors (7776377).

38881855 is an equidigital number, since it uses as much as digits as its factorization.

38881855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776376.

The product of its digits is 307200, while the sum is 46.

The square root of 38881855 is about 6235.5316533556. The cubic root of 38881855 is about 338.7783580332.

The spelling of 38881855 in words is "thirty-eight million, eight hundred eighty-one thousand, eight hundred fifty-five".