38140168 has 72 divisors (see below), whose sum is σ = 83203470. Its totient is φ = 16368000.

The previous prime is 38140147. The next prime is 38140169. The reversal of 38140168 is 86104183.

It can be written as a sum of positive squares in only one way, i.e., 37675044 + 465124 = 6138^2 + 682^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (38140169) 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 17 ways as a sum of consecutive naturals, for example, 930228 + ... + 930268.

Almost surely, 2^38140168 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 38140168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41601735).

38140168 is an abundant number, since it is smaller than the sum of its proper divisors (45063302).

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

38140168 is a wasteful number, since it uses less digits than its factorization.

38140168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 38140168 is about 6175.7726642097. The cubic root of 38140168 is about 336.6104030846.

The spelling of 38140168 in words is "thirty-eight million, one hundred forty thousand, one hundred sixty-eight".