38199816 has 128 divisors (see below), whose sum is σ = 114566400. Its totient is φ = 11750400.

The previous prime is 38199773. The next prime is 38199817. The reversal of 38199816 is 61899183.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38199817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370821 + ... + 370923.

It is an arithmetic number, because the mean of its divisors is an integer number (895050).

Almost surely, 2^38199816 is an apocalyptic number.

38199816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38199816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57283200).

38199816 is an abundant number, since it is smaller than the sum of its proper divisors (76366584).

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

38199816 is a wasteful number, since it uses less digits than its factorization.

38199816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 226 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 38199816 is about 6180.5999708766. The cubic root of 38199816 is about 336.7857884296.

The spelling of 38199816 in words is "thirty-eight million, one hundred ninety-nine thousand, eight hundred sixteen".