38891268 has 36 divisors (see below), whose sum is σ = 105871948. Its totient is φ = 11966400.

The previous prime is 38891239. The next prime is 38891269. The reversal of 38891268 is 86219883.

38891268 is a `hidden beast` number, since 388 + 9 + 1 + 268 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13307904 + 25583364 = 3648^2 + 5058^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (38891269) 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 11 ways as a sum of consecutive naturals, for example, 41083 + ... + 42018.

Almost surely, 2^38891268 is an apocalyptic number.

It is an amenable number.

38891268 is an abundant number, since it is smaller than the sum of its proper divisors (66980680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38891268 is a wasteful number, since it uses less digits than its factorization.

38891268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83124 (or 83119 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 38891268 is about 6236.2863949630. The cubic root of 38891268 is about 338.8056943780.

The spelling of 38891268 in words is "thirty-eight million, eight hundred ninety-one thousand, two hundred sixty-eight".