38605881 has 16 divisors (see below), whose sum is σ = 53301248. Its totient is φ = 24829200.

The previous prime is 38605877. The next prime is 38605901. The reversal of 38605881 is 18850683.

It is a happy number.

It is not a de Polignac number, because 38605881 - 2² = 38605877 is a prime.

It is a super-2 number, since 2×38605881² = 2980828095572322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38605871) 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 15 ways as a sum of consecutive naturals, for example, 52740 + ... + 53466.

It is an arithmetic number, because the mean of its divisors is an integer number (3331328).

Almost surely, 2^38605881 is an apocalyptic number.

38605881 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38605881 is a deficient number, since it is larger than the sum of its proper divisors (14695367).

38605881 is a wasteful number, since it uses less digits than its factorization.

38605881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 38605881 is about 6213.3630989988. The cubic root of 38605881 is about 337.9749319083.

The spelling of 38605881 in words is "thirty-eight million, six hundred five thousand, eight hundred eighty-one".