38815265 has 4 divisors (see below), whose sum is σ = 46578324. Its totient is φ = 31052208.

The previous prime is 38815261. The next prime is 38815289. The reversal of 38815265 is 56251883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24245776 + 14569489 = 4924^2 + 3817^2 .

It is a cyclic number.

It is not a de Polignac number, because 38815265 - 2² = 38815261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38815261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3881522 + ... + 3881531.

It is an arithmetic number, because the mean of its divisors is an integer number (11644581).

Almost surely, 2^38815265 is an apocalyptic number.

It is an amenable number.

38815265 is a deficient number, since it is larger than the sum of its proper divisors (7763059).

38815265 is an equidigital number, since it uses as much as digits as its factorization.

38815265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763058.

The product of its digits is 57600, while the sum is 38.

The square root of 38815265 is about 6230.1898044923. The cubic root of 38815265 is about 338.5848475330.

The spelling of 38815265 in words is "thirty-eight million, eight hundred fifteen thousand, two hundred sixty-five".