38506505 has 8 divisors (see below), whose sum is σ = 46254024. Its totient is φ = 30774400.

The previous prime is 38506487. The next prime is 38506511. The reversal of 38506505 is 50560583.

It can be written as a sum of positive squares in 4 ways, for example, as 20757136 + 17749369 = 4556^2 + 4213^2 .

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

It is not a de Polignac number, because 38506505 - 2¹⁴ = 38490121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2645 + ... + 9165.

It is an arithmetic number, because the mean of its divisors is an integer number (5781753).

Almost surely, 2^38506505 is an apocalyptic number.

It is an amenable number.

38506505 is a deficient number, since it is larger than the sum of its proper divisors (7747519).

38506505 is a wasteful number, since it uses less digits than its factorization.

38506505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7707.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 38506505 is about 6205.3609886936. The cubic root of 38506505 is about 337.6846872112.

The spelling of 38506505 in words is "thirty-eight million, five hundred six thousand, five hundred five".