38883681 has 12 divisors (see below), whose sum is σ = 56377620. Its totient is φ = 25824480.

The previous prime is 38883667. The next prime is 38883683. The reversal of 38883681 is 18638883.

It can be written as a sum of positive squares in 2 ways, for example, as 1245456 + 37638225 = 1116^2 + 6135^2 .

It is not a de Polignac number, because 38883681 - 2¹⁵ = 38850913 is a prime.

It is a super-2 number, since 2×38883681² = 3023881296219522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38883683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5610 + ... + 10451.

It is an arithmetic number, because the mean of its divisors is an integer number (4698135).

Almost surely, 2^38883681 is an apocalyptic number.

It is an amenable number.

38883681 is a deficient number, since it is larger than the sum of its proper divisors (17493939).

38883681 is a wasteful number, since it uses less digits than its factorization.

38883681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16336 (or 16333 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 38883681 is about 6235.6780705870. The cubic root of 38883681 is about 338.7836612747.

It can be divided in two parts, 3888 and 3681, that added together give a square (7569 = 87²).

The spelling of 38883681 in words is "thirty-eight million, eight hundred eighty-three thousand, six hundred eighty-one".