38290905 has 24 divisors (see below), whose sum is σ = 67217280. Its totient is φ = 20161440.

The previous prime is 38290891. The next prime is 38290943. The reversal of 38290905 is 50909283.

It is not a de Polignac number, because 38290905 - 2⁵ = 38290873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38290905.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1831 + ... + 8940.

It is an arithmetic number, because the mean of its divisors is an integer number (2800720).

Almost surely, 2^38290905 is an apocalyptic number.

It is an amenable number.

38290905 is a deficient number, since it is larger than the sum of its proper divisors (28926375).

38290905 is a wasteful number, since it uses less digits than its factorization.

38290905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10861 (or 10858 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 38290905 is about 6187.9645280173. The cubic root of 38290905 is about 337.0532690289.

The spelling of 38290905 in words is "thirty-eight million, two hundred ninety thousand, nine hundred five".