38413881 has 24 divisors (see below), whose sum is σ = 62172864. Its totient is φ = 22649760.

The previous prime is 38413873. The next prime is 38413883. The reversal of 38413881 is 18831483.

It is not a de Polignac number, because 38413881 - 2³ = 38413873 is a prime.

It is a super-2 number, since 2×38413881² = 2951252506964322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38413883) 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 23 ways as a sum of consecutive naturals, for example, 1581 + ... + 8906.

It is an arithmetic number, because the mean of its divisors is an integer number (2590536).

Almost surely, 2^38413881 is an apocalyptic number.

It is an amenable number.

38413881 is a deficient number, since it is larger than the sum of its proper divisors (23758983).

38413881 is a wasteful number, since it uses less digits than its factorization.

38413881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10541 (or 10538 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 38413881 is about 6197.8932711043. The cubic root of 38413881 is about 337.4137129207.

The spelling of 38413881 in words is "thirty-eight million, four hundred thirteen thousand, eight hundred eighty-one".