38109820 has 48 divisors (see below), whose sum is σ = 96284160. Its totient is φ = 12377664.

The previous prime is 38109817. The next prime is 38109821. The reversal of 38109820 is 2890183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38109821) 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, 4504 + ... + 9823.

It is an arithmetic number, because the mean of its divisors is an integer number (2005920).

Almost surely, 2^38109820 is an apocalyptic number.

It is an amenable number.

38109820 is an abundant number, since it is smaller than the sum of its proper divisors (58174340).

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

38109820 is a wasteful number, since it uses less digits than its factorization.

38109820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14362 (or 14360 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 38109820 is about 6173.3151547609. The cubic root of 38109820 is about 336.5210994823.

The spelling of 38109820 in words is "thirty-eight million, one hundred nine thousand, eight hundred twenty".