38139336 has 96 divisors (see below), whose sum is σ = 111908160. Its totient is φ = 12146112.

The previous prime is 38139329. The next prime is 38139337. The reversal of 38139336 is 63393183.

38139336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 38139336.

It is not an unprimeable number, because it can be changed into a prime (38139337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44286 + ... + 45138.

It is an arithmetic number, because the mean of its divisors is an integer number (1165710).

Almost surely, 2^38139336 is an apocalyptic number.

38139336 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 38139336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55954080).

38139336 is an abundant number, since it is smaller than the sum of its proper divisors (73768824).

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

38139336 is a wasteful number, since it uses less digits than its factorization.

38139336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 881 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 38139336 is about 6175.7053038499. The cubic root of 38139336 is about 336.6079554298.

The spelling of 38139336 in words is "thirty-eight million, one hundred thirty-nine thousand, three hundred thirty-six".