38772665 has 8 divisors (see below), whose sum is σ = 49264200. Its totient is φ = 29193472.

The previous prime is 38772659. The next prime is 38772667. The reversal of 38772665 is 56627783.

It can be written as a sum of positive squares in 4 ways, for example, as 15578809 + 23193856 = 3947^2 + 4816^2 .

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 38772665 - 2¹⁴ = 38756281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38772667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227990 + ... + 228159.

It is an arithmetic number, because the mean of its divisors is an integer number (6158025).

Almost surely, 2^38772665 is an apocalyptic number.

It is an amenable number.

38772665 is a deficient number, since it is larger than the sum of its proper divisors (10491535).

38772665 is a wasteful number, since it uses less digits than its factorization.

38772665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456171.

The product of its digits is 423360, while the sum is 44.

The square root of 38772665 is about 6226.7700294776. The cubic root of 38772665 is about 338.4609358500.

The spelling of 38772665 in words is "thirty-eight million, seven hundred seventy-two thousand, six hundred sixty-five".