38768690 has 8 divisors (see below), whose sum is σ = 69783660. Its totient is φ = 15507472.

The previous prime is 38768689. The next prime is 38768699. The reversal of 38768690 is 9686783.

It can be written as a sum of positive squares in 2 ways, for example, as 32024281 + 6744409 = 5659^2 + 2597^2 .

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

It is a super-2 number, since 2×38768690² = 3006022648632200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38768699) by changing a digit.

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, 1938425 + ... + 1938444.

Almost surely, 2^38768690 is an apocalyptic number.

38768690 is a deficient number, since it is larger than the sum of its proper divisors (31014970).

38768690 is a wasteful number, since it uses less digits than its factorization.

38768690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876876.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 38768690 is about 6226.4508349460. The cubic root of 38768690 is about 338.4493690396.

The spelling of 38768690 in words is "thirty-eight million, seven hundred sixty-eight thousand, six hundred ninety".