38405823 has 16 divisors (see below), whose sum is σ = 51992160. Its totient is φ = 25214976.

The previous prime is 38405813. The next prime is 38405863. The reversal of 38405823 is 32850483.

38405823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38405823 - 2²⁰ = 37357247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38405813) 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 15 ways as a sum of consecutive naturals, for example, 83811 + ... + 84267.

It is an arithmetic number, because the mean of its divisors is an integer number (3249510).

Almost surely, 2^38405823 is an apocalyptic number.

38405823 is a deficient number, since it is larger than the sum of its proper divisors (13586337).

38405823 is a wasteful number, since it uses less digits than its factorization.

38405823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 38405823 is about 6197.2431774136. The cubic root of 38405823 is about 337.3901184130.

The spelling of 38405823 in words is "thirty-eight million, four hundred five thousand, eight hundred twenty-three".