38818320 has 40 divisors (see below), whose sum is σ = 120337536. Its totient is φ = 10351488.

The previous prime is 38818301. The next prime is 38818321. The reversal of 38818320 is 2381883.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (38818321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 80632 + ... + 81111.

Almost surely, 2^38818320 is an apocalyptic number.

38818320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38818320 is an abundant number, since it is smaller than the sum of its proper divisors (81519216).

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

38818320 is a wasteful number, since it uses less digits than its factorization.

38818320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161759 (or 161753 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 38818320 is about 6230.4349767893. The cubic root of 38818320 is about 338.5937302030.

The spelling of 38818320 in words is "thirty-eight million, eight hundred eighteen thousand, three hundred twenty".