38643265 has 8 divisors (see below), whose sum is σ = 46500480. Its totient is φ = 30828912.

The previous prime is 38643233. The next prime is 38643271. The reversal of 38643265 is 56234683.

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

It is a cyclic number.

It is not a de Polignac number, because 38643265 - 2⁵ = 38643233 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 8695 + ... + 12364.

It is an arithmetic number, because the mean of its divisors is an integer number (5812560).

Almost surely, 2^38643265 is an apocalyptic number.

It is an amenable number.

38643265 is a deficient number, since it is larger than the sum of its proper divisors (7857215).

38643265 is a wasteful number, since it uses less digits than its factorization.

38643265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21431.

The product of its digits is 103680, while the sum is 37.

The square root of 38643265 is about 6216.3707257531. The cubic root of 38643265 is about 338.0839893749.

The spelling of 38643265 in words is "thirty-eight million, six hundred forty-three thousand, two hundred sixty-five".