38540406 has 8 divisors (see below), whose sum is σ = 77080824. Its totient is φ = 12846800.

The previous prime is 38540389. The next prime is 38540413. The reversal of 38540406 is 60404583.

It is a sphenic number, since it is the product of 3 distinct primes.

38540406 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3211695 + ... + 3211706.

It is an arithmetic number, because the mean of its divisors is an integer number (9635103).

Almost surely, 2^38540406 is an apocalyptic number.

38540406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38540406 is a wasteful number, since it uses less digits than its factorization.

38540406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6423406.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 38540406 is about 6208.0919774114. The cubic root of 38540406 is about 337.7837569717.

Adding to 38540406 its reverse (60404583), we get a palindrome (98944989).

The spelling of 38540406 in words is "thirty-eight million, five hundred forty thousand, four hundred six".