38817816 has 64 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 12468480.

The previous prime is 38817809. The next prime is 38817827. The reversal of 38817816 is 61871883.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101161 + ... + 101543.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^38817816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38817816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50319360).

38817816 is an abundant number, since it is smaller than the sum of its proper divisors (61820904).

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

38817816 is a wasteful number, since it uses less digits than its factorization.

38817816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 532 counting only the distinct ones).

The product of its digits is 64512, while the sum is 42.

The square root of 38817816 is about 6230.3945300438. The cubic root of 38817816 is about 338.5922648126.

The spelling of 38817816 in words is "thirty-eight million, eight hundred seventeen thousand, eight hundred sixteen".